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Quartz Cuvettes for UV vis IR Spectroscopy: 500 Items for Easy Ordering

Our quartz cuvettes below are used to contain samples for spectroscopic research in the UV and visible ranges. Cuvettes with two polished sides are suitable for absorption spectroscopy while cuvettes with four polished sides are for fluorescence spectroscopy.

QVARZ® offers a wide range of quartz cuvettes with a choice of path lengths for use with UV-Vis and UV-Vis-NIR systems, including rectangular cells, microcuvettes, and flow cells with various aperture sizes and geometries.

The stock quartz cuvettes (all cuvettes and cells) are suited for wavelengths ranging from 190 to 2500 nanometers. And for wavelengths ranging from 250nm to 3500nm, IR fused quartz cuvettes are available, as well as optical glass cuvettes for wavelengths ranging from 340nm to 2500nm. Our quartz cuvette sizes range from macro to semi-micro to micro volumes and path lengths from 0.1mm to 100mm.



Optical Components For UV/visible/NIR Spectroscopy

In this below product list, you will find our most popular Best Sellers that our customers use the most frequently. If you are unable to locate a suitable product in this selection, please contact us or use the cuvette finder on our website to locate the product of your choice. We will also be delighted to work with you to develop individual and tailored solutions for your measurement requirements.

In addition to the UV quartz cuvettes that are currently in stock, custom orders are welcome. Please discuss your material and dimension needs with a sales representative at your earliest opportunity. With your tailored requirement, we will be delighted to assist you.

  • Fused Quartz Cuvettes with Guaranteed High Transmission
  • Path Lengths From 0.1 to 100mm Door to Door Shipping
  • Extremely High Windows Parallelism with Tolerance of 0.01mm
  • Optical Windows Surface Flatness of 0.01mm
  • Quartz Transmission Spectrum of 190nm-2500nm
  • Pair Variation of 0.1% for Reproducible Measurement Results
  • Chemical Resistance and High-Temperature Stability
  • Spectrophotometer and Fluorometer Use with 2/4 Clear Windows
  • Customizable Ultra Micro, Micro, and Macro Cuvettes with Capacities Ranging from 70µL to 35mL
Quartz Cuvettes with Different Path Lengths
Quartz Cuvettes

Quartz Cuvette Transmission

  • Fabricated from High Transmission UV Quartz for the 190 nm – 2.5 µm Spectrum Range
  • Two or Four Optical Polished Windows for UV/Vis/IR Spectroscopic Measurements
  • Ultra Micro, Micro, and Macro Cuvettes with Capacities Ranging from 70µL to 35mL
  • Standard 0.2mm – 100mm Optical Path Lengths and 12.5x(2.7 – 102.5)mm Square Footer
  • Available with PTFE Closures or Airtight Stoppers / Screw Threaded Caps
1

QVARZ® Cuvettes Transmission Characteristics

    The following table is our cuvettes and cells made of quartz material suitable for wavelength from 190nm to 2500nm and depicts the percentage transmission for the material. IR or Glass material is not included. Please keep in mind that the transmission curves were measured on empty cells, which should be taken into consideration.
Fused UV vis Cuvettes Transmission
Why QVARZ® Cuvettes and Cells?

QVARZ® is world-renowned as the producer of premium quartz cuvettes. Over fifteen years of experience manufacturing quartz cuvettes ensures that every QVARZ® cuvette is manufactured to the most exacting standards for reproducible results.

  • Spectrophotometry cuvettes - Most spectrophotometry applications in the visible and UV ranges benefit from QVARZ® spectrophotometry cuvettes. Our cuvettes made of fused qvartz material deliver precise and reliable readings even at wavelengths as low as 190 nm. QVARZ® cuvettes are compatible with most spectrophotometers and photometers with standard 0.2 - 100 mm path lengths.

  • Fluorimetry cuvettes - QVARZ® brings two decades of experience molding high-quality spectrophotometry cuvettes to new four-sided clear cuvettes for fluorimetry. Available in standard quartz material with ultra-low auto-fluorescence for the highest precision measurements.

  • Protective packaging - QVARZ® cuvettes are encased in dust-free, low scratching expanded polystyrene packaging. This ensures that premium cuvettes arrive in the laboratory ina the same pristine condition they were in at the factory, with optical quality windows and free of contaminants. 

  • Volumes for most purposes - Our cuvettes are available in a variety of ranges from macro to macro semi-micro sizes to respond to the needs of most scientific applications. We are also able to customize sample volume to deliver consistent, accurate findings.

  • Perform consistently - QVARZ® Cuvettes are constructed from high-quality fused quartz materials and are grouped by manufacturing mold cavities to ensure the lowest fluctuation in extinction coefficient.

  • Customization - Custom cuvettes and cells are encouraged and available upon request; mechanical drawings with specifications and tolerances are prerequisites. Awesome pricing and flexibility on small quantities. 

Qvarz® cuvettes are high-quality cells designed to contain liquid samples for spectroscopic measurements. In addition to UV light, these quartz cuvettes are also compatible with visible and infrared light spectrums up to 2500 nm. Absorption and fluorescence spectroscopy require cuvettes with two or four optical polished sides which are available in stock or customization. Optical polished sides may be cleaned using standard cleaning methods. Additionally, PTFE tops are available in three different types: PTFE lids to block dust and other particles, PTFE stoppers or screw caps to keep liquid from evaporating, and for airtight applications.

Most spectrophotometers and our Cuvette Holder and Mounts can use Qvarz® cuvettes because of their typical 12.5mm square outer diameter and 10mm optical path length through the sample. Single-piece pricing is available for all of our sizes (see the tables below for further details). Enhanced chemical resistance is offered for all standard cuvettes from 70 µL to 35mL cells. The letter “Q” is laser etched on the outside of all quartz cuvettes to indicate that they are made of quartz.

Bonded cuvettes with sub- or ultra-micro volumes are assembled with glue for either two or four transparent windows. Molded type quartz cuvettes and cells are built by heating the quartz to a high temperature and then pressing the pieces together, while fused cuvettes have a quartz powder put to the edges before heating. Both molded and fused quartz cuvettes have enhanced chemical resistance. You can find more details on the different types of cuvettes for bonded, fused, or molded types.

Solvent Compatibility
To avoid cuvettes leaking, bonded quartz cuvettes should not be used with benzene, toluene, aqua regia, ethanol, corrosive solutions, or other similar compounds. Aqua regia is compatible with the fused and molded cuvettes with improved chemical resistance.

1234
*Molded*Fused*Bonded
UV vis ( 190- 2500 nm)YesYesYes
Transmission Matched On RequestNoNo
Transmission > 80%YesYesYes
Resistant to Acids and Bases (except hydrofluoric acid)YesYesNo
Resistant to Organic SolventsYesYesNo
Usable upto 600°C (1112°F)YesYesYes
Usable upto 1200°C (2192°F)YesNoNo
0 Variations ReadingOn RequestNoNo
FabricationMoldedAssembled with Quartz PowderAssembled with Glue
AdhesivesNoNoYes
StorageShort Term StorageClean After UseClean After Use
Available MaterialFused Quartz Material
NoteMolded and fused cuvettes and cells are assembled by direct fusion without the use of adhesives throughout the production process. This guarantees resistance against corrosive chemicals and high temperature. Each quartz cuvette and cell has excellent transmission from 190nm to 2500nm.
  • Molded” Cuvettes: The quartz pieces that make up these quartz cuvettes are finely polished before heating. After being heated to a high temperature, pressure is applied to adhere the pieces together.
  • Fused” Cuvettes: A quartz powder is applied to the edges of the quartz pieces. Then, the quartz is heated to a high temperature and pressure is applied to adhere the pieces together.
  • Bonded” Cuvettes: The ultra micro quartz cuvettes with aperture windows and semi cuvettes with black walls and some customized cuvettes are assembled with glue. Use with aqueous samples only.

Quartz Cuvettes for Spectrophotometers

Cuvettes with PTFE Lids
Open Top Cuvettes
Stoppers Cuettes
Stoppers Absorption Cuvettes
Screw Cap Cuvettes and Caps
Screw Absorption Cuvettes

Cuvettes with Open Top, 2 Polished Windows

  • Two Optical Clear Windows for UV-vis Absorption Spectroscopy
  • PTFE Lid (some no lids) with Each Cuvette to Block Dust or Other Particles
  • Fabricated from High Transmission UV Fused Quartz (190nm – 2.5µm)
  • Various Volume Capabilities from 2µL to 35mL, Customizable
  • Flexible Optical Path Lengths from 0.2mm to 100mm
  • Fused and Molded Quartz Cuvettes with Enhanced Chemical Resistance
  • Z Dimensions of 8.5mm, 15mm, and 20mm suitable for Various Manufacturers
2020 04 24 171749

For absorption spectroscopy research, our UV Fused Quartz Cuvettes include two polished sides, as well as two frosted sides, for easy handling. Surfaces that aren’t being utilized are blacked to decrease light scattering in the ultramicro and semi-micro cuvettes (350 to 700 and 1050 to 1400 µL). Polished sides may be cleaned using standard optics cleaning methods. These quartz cuvettes are not suitable for fluorescence spectroscopy since they only have two polished windows, which means they cannot be used to measure fluorescence at right angles to the beam. Cuvettes with four polished sides are also available from Qvarz®.

Semi Micro Quartz Cuvettes

VAOBM1 0.35mL Semi Micro Cuvette PTFE Lid Bonded Width 1mm 2 Windows 2
Bonded
VAOFC50 5.25mL Semi Cuvette Open Top Fused Width 3mm 2 Windows 50mm Lightpath 4
3mm
VAOBS1 0.35mL Semi Micro Cuvette PTFE Lid Bonded Width 1mm Black Walls 4
Bonded
VAOFC35 0.8mL Semi Cuvette Customized Open Top Molded Width 3mm 2 Windows 3
3mm
2 windows narrow width cuvette fused 1
Fused
VAOFC44 0.56mL Semi Cuvette Customized Open Top Molded Width 4x4mm 2 Windows 4
4mm
2 window clear absorption cuvette narrow width 1 5mm 1
Molded
VAOFS03 105 uL Semi Micro Cuvette Fused Width 0.3 mm 2 Windows 4
0.3mm
5mm pathlength narrow width cuvette 2
5mm

0.2 – 100 mm Path Lengths Quartz Cuvettes

Our quartz cuvettes feature a 12.5 mm square outside diameter, a 10 mm transmitted path length through the sample, and capacities ranging from 70 ul to 35 ml. In addition to ordinary “Fused” type quartz cuvettes (ie. VAOFIB), short or long path lengths (0.2, 0.5, 1, 2, 3, 5, 10, 20, 30, 40, 50, 100mm) cuvettes are offered in a “Molded” type for increased chemical resistance(ie. VAOMK). All these quartz cuvettes come with a PTFE lid to avoid contamination from dust and other particles, and each cuvette is laser etched with a letter “Q” that denotes its quartz construction on the light transmission side.

VAOB02 70uL Ultra Absorption Cuvette Bonded Round Base Lighpath 0.2mm 2
0.2mm
VAOM5 1.75mL Absorption Cuvette with PTFE Lid Molded Round Base Lighpath 5mm 1
5mm
VAOM20 7mL Standard Absorption Cuvette with PTFE Lid Molded Lightpath 20mm 4
20mm
VNE087 28mL Long Pathlength Absorption Quartz Cuvette Bonded 1
80mm
VAOM05 170uL Ultra Absorption Cuvette Molded Round Base Lighpath 0.5mm 1
0.5mm
VAOF56 Special Cuvette 0.54mL Absorption Cuvette 27x8x7mm 2 Windows Lightpath 6mm 1
6mm
VAOM30 10.5mL Standard Absorption Cuvette with PTFE Lid Molded Lightpath 30mm 2
30mm
VNE090 31.5mL Long Pathlength Absorption Quartz Cuvette Bonded 5
90mm
VAOM1 0.35mL Absorption Cuvette with PTFE Lid Molded Round Base Lighpath 1mm 1
1mm
VAOMK 3.5mL Absorption Cuvette with PTFE Lid Molded Round Base Lighpath 10mm 2
10mm
VAOM40 14mL Standard Absorption Cuvette with PTFE Lid Molded Lightpath 40mm 4
40mm
VAOM100 35mL Standard Absorption Cuvette with PTFE Lid Molded Lightpath 100mm 2
10mm
VAOM2 0.7mL Absorption Cuvette with PTFE Lid Molded Round Base Lighpath 2mm 3
2mm
VAOFL1 3.5mL Absorption Cuvette with Volume Markings PTFE Lid Fused Round Base Lighpath 10mm 1
10mm
VAOM50 17.5mL Standard Absorption Cuvette with PTFE Lid Molded Lightpath 50mm 3
50mm
VAOM3 1.05mL Absorption Cuvette with PTFE Lid Molded Round Base Lighpath 3mm 3
3mm
VAOFW5 3.5mL Absorption Cuvette with PTFE Lid Fused Flat Base Lighpath 10mm 1
10mm
VNE067 21mL Standard Absorption Quartz Cuvette Fused 2
60mm
Cuvette Racks & Inserts

Racks or inserts are required for short path length cells that have less than 12.5 mm depth, to ensure secure mounting in a standard cell holder. We offers black spacers and racks for use with 1, 2, and 5 mm path length cells.

  • Spacers allow 1, 2, and 5 mm path length cells (with less than 12.5 mm depth) to be securely mounted in a standard cell holder (for 12.5 x 12.5 mm cells)
  • Required when there is no path length adjustment facility in the cell holder
  • Quartz rack can also be used instead of spacers – they provide more flexibility as each insert provides two different pathlengths selected by rotating through 90 degrees.
VAC015 Universal Aluminum Cuvette Rack for 0.1 5 mm Path Length Cuvette 1
0.1-5 mm
VACSP1 Cuvette Acccessory Spacer for 1mm Path Length Cuvette Size 38 x 12.5 x 9 mm 4
1mm use
VACSP2 Cuvette Acccessory Spacer for 2mm Path Length Cuvette Size 38 x 12.5 x 8 mm 3
2mm use
VACSP5 Cuvette Acccessory Spacer for 5mm Path Length Cuvette Size 38 x 12.5 x 5 mm 3
5mm use

Ultra Micro Cuvettes (<300uL)

The ultra micro cuvettes with aperture windows and semi cuvettes with black walls are assembled with glue, which can be destroyed by benzene or other solutions with strong corrosive characteristics. These glued cuvettes are described as “Bonded” in the item description. These quartz cuvettes are not recommended for use with benzene, toluene, aqua regia ethanol or other corrosive liquids because they may damage the bonding between the parts and cause the cuvette to leak. 

Below the sub micro quartz cuvettes have very small apertures that the Z dimensions should be considered before ordering.

VNE071 100uL Sub Micro Absorption Cuvette Black Bonded 2 Windows Z dim 15mm 5
100uL
VAOB10B 100uL Sub Micro Absorption Cuvette Bottom Black Bonded 2 Windows 3
100uL
VAOB200B 200uL Sub Micro Absorption Cuvette Bottom Black Bonded 2 Windows 1
200uL
VNE069 50uL Sub Micro Absorption Cuvette Black Bonded 2 Windows Z dim 8.515mm 4
50uL
VAOB10C 100uL Sub Micro Absorption Cuvette Customized Semi Black Bonded Height 25mm 3
100uL
VAOB20B 20uL Sub Micro Absorption Cuvette Semi Black Bonded 2 Windows 3
100uL
VNE024 20 200 uL Sub Micro Absorption Cuvette Semi Black Bonded 2 Windows 8
20-200uL
VAOB10D 100uL Sub Micro Absorption Cuvette Customized All Black Bonded Height 8mm 3
100uL
VAOB50 50uL Sub Micro Absorption Cuvette All Black Bonded 2 Windows 4
50uL
VAOB50B 50uL Sub Micro Absorption Cuvette Bottom Black Bonded 2 Windows 4
50uL
VAOB100 100uL Sub Micro Absorption Cuvette All Black Bonded 2 Windows 3
100uL
VAOB300B 300uL Sub Micro Absorption Cuvette Bottom Black Bonded 2 Windows 2
300uL

And Fused” cuvettes have quartz powder applied to the edges before heating. Molded” cuvettes are assembled by first heating the quartz to a high temperature and then applying pressure to adhere the pieces together, eliminating the need for glue which is adhesive free, direct fusion bonding. “Fused” and “Molded” fabrication method allows the cuvette with enhanced chemical resistance to hold sample solutions with corrosive properties, similar to those of nitrohydrochloric acid (aqua regia), without being damaged. 

Customized Open Top Quartz Cuvettes

VNE039 22 mL Customized Cuvette 2 Windows 7
Cuvette with Holder
wide mouth quartz cuvettes
Wide Window Cuvettes
Long Mouth Quartz Cuvettes
Long Mouth Cuvettes
0.1 2 mm detachabel cells
Detachable Cuvettes

Cuvettes with PTFE Stopper, 2 Polished Windows

  • Two Optical Clear Windows for UV-vis Absorption Spectroscopy
  • PTFE Stopper Included with Each Cuvette to for Airtight Seal
  • Fabricated from High Transmission UV Fused Quartz (190nm – 2.5µm)
  • Various Volume Capibilities from 100µL to 35mL, Customizable
  • Flexible Optical Path Lengths from 1mm to 100mm
  • Fused and Molded Cuvettes with Enhanced Chemical Resistance
  • Z Dimension of 8.5mm, 15mm, and 20mm suitable for Various of Manufacturers
cuvettes qvarz 2

For absorption spectroscopy research, our UV Fused Quartz Cuvettes include two polished sides, as well as two frosted sides, for easy handling. Surfaces that aren’t being utilized are blacked to decrease light scattering in the ultramicro and semi-micro quartz cuvettes (350 to 700 and 1050 to 1400 µL). Polished sides may be cleaned using standard optics cleaning methods. These quartz cuvettes are not suitable for fluorescence spectroscopy since they only have two polished windows, which means they cannot be used to measure fluorescence at right angles to the beam. Cuvettes with four polished sides are also available from Qvarz®.

Our cuvettes feature a 12.5 mm square outside diameter, a 10 mm transmitted path length through the sample, and capacities ranging from 100 microliters to 35 milliliters. In addition to ordinary “Fused” type cuvettes (ie. VAPFE), short or long path lengths (1, 2, 100mm) cuvettes are offered in a “Molded” type for increased chemical resistance(ie. VAPMG). All these quartz cuvettes come with a PTFE stopper to avoid contamination from dust and other particles, and for airtight sealing purposes. Each cuvette is laser etched with a letter “Q” that denotes its quartz construction on the light transmission side.

The ultra micro cuvettes with aperture windows and semi cuvettes with black walls are assembled with glue (ie. VAPBH1, VAPB100), which can be destroyed by benzene or other solutions with strong corrosive characteristics. These glued cuvettes are described as “Bonded” in the item description. These cuvettes are not recommended for use with benzene, toluene, aqua regia ethanol, or other corrosive liquids because they may damage the bonding between the parts and cause the cuvette to leak. 

VAPM6 0.35mL Absorption Cuvette with PTFE Stopper Molded Round Base Lighpath 1mm 1
1mm
VAPB100M 7mL Standard Absorption Cuvette with 2 PTFE Stopper Fused Width 2mm Lightpath 100mm 5
100mm
VALB350 350%CE%BCl Absorption Cuvette with Stopper Molded Lightpath 1mm 2 Clear Windows 2
350uL
VAPM8A 0.7mL Absorption Cuvette with PTFE Stopper Molded Round Base Lighpath 2mm 1
2mm
VNE021 1.4mL Semi Micro Cuvette PTFE Stopper 2
4mm
VLFPP 1.3mL Flow Cell with PTFE Stoppers 2 Windows Lightpath 10 mm Fused 2
1.3mL
VNE018 1.05mL Absorption Cuvette with PTFE Stopper 1
3mm
semi micro absorption cuvette with stopper 2
1-4mm
crf chemical resistant quartz cuvette
10mm
2 clear window micro cuvette with stopper
1-4mm
VAPF100 35mL Standard Absorption Cuvette with 2 PTFE Stopper Fused Lightpath 100mm 4
100mm
VAPB100 100uL Sub Micro Absorption Cuvette All Black Stopper Bonded 2 Windows 1
100uL

Cuvettes with Screw Caps, 2 Polished Windows

  • Two Optical Clear Windows for UV-vis Absorption Spectroscopy
  • PTFE Screw Threaded Cap Included with Each Cuvette to for Airtight Seal
  • Fabricated from High Transmission UV Fused Quartz (190nm – 2.5µm)
  • Various Volume Capabilities from 350µL to 3.5mL, Customizable
  • Flexible Optical Path Lengths from 1mm to 10mm
  • Fused and Molded Cuvettes with Enhanced Chemical Resistance
  • Suitable for Various of Manufacturers
VASM7 3.5mL Standard Absorption Cuvette with Screw Cap Molded Round Bottom Lighpath 10mm 2

For absorption spectroscopy research, our UV Fused Quartz Cuvettes include two polished sides, as well as two frosted sides, for easy handling. Surfaces that aren’t being utilized are blacked to decrease light scattering in the ultramicro and semi-micro cuvettes (350 to 700 and 1050 to 1400 µL). Polished sides may be cleaned using standard optics cleaning methods. These cuvettes are not suitable for fluorescence spectroscopy since they only have two polished windows, which means they cannot be used to measure fluorescence at right angles to the beam. Cuvettes with four polished sides are also available from Qvarz®.

Our cuvettes feature a 12.5 mm square outside diameter, a 10 mm transmitted path length through the sample, and capacities ranging from 350 microliters to 3.5 milliliters. In addition to ordinary “Fused” type cuvettes (ie. VASF1), short or long path lengths (2, 5mm) cuvettes are offered in a “Molded” type for increased chemical resistance(ie. VASM7). All these quartz cuvettes come with a PTFE screw-threaded cap each to avoid contamination from dust and other particles and are the airtight sealed. Each cuvette is laser etched with a letter “Q” that denotes its quartz construction on the light transmission side.

VASM7 3.5mL Standard Absorption Cuvette with Screw Cap Molded Round Bottom Lighpath 10mm 3
10mm
VASM88 0.7mL Absorption Cuvette with Screw Cap Molded Round Base Lighpath 2mm 4
2mm
VASMS3 1.05mL Semi Micro Cuvette Screw Cap Molded Width 3mm 2 Windows 1
3mm
VASM63 3.5mL Standard Absorption Cuvette with Screw Cap Flat Base Lighpath 10mm 2
10mm
VASM9 0.7mL Absorption Cuvette with Macro Screw Cap Molded Round Base Lighpath 2mm
2mm
VNE038 17mL Standard Absorption Cuvette with Screw Cap 6
20mm
VASM84 3.5mL Standard Spectrometer Cuvette with Screw Cap Molded New Lighpath 10mm 1
10mm
VASMR5 1.75mL Fluorescence Cuvette with Screw Cap Molded Round Base Lighpath 5mm 1
5mm
VLFSC 2mL Flow Cell with PTFE Screw Cap Airtight 2 Windows Lightpath 10 mm Molded 4
10mm
VASM95 3.5mL Standard Spectrometer Cuvette with Inner Screw Cap Molded New Lighpath 10mm 2
10mm
VASMS1 0.35mL Semi Micro Cuvette Screw Cap Molded Width 1mm 2 Windows 1
1mm
VASF1 3.5mL Standard Spectrometer Cuvette with Inner Screw Cap Fused New Lighpath 10mm 2
10mm
VASMS2 0.7mL Semi Micro Cuvette Screw Cap Molded Width 2mm 2 Windows 1
2mm

Quartz Cuvettes for Fluorometers

Cuvettes with Open Top, 4 Polished Windows

  • Four Optical Clear Windows for Fluorescence Spectroscopy
  • PTFE Lid (some no lids) with Each Cuvette to Block Dust or Other Particles
  • Fabricated from High Transmission UV Fused Quartz (190nm – 2.5µm)
  • Various Volume Capabilities from 20µL to 125mL, Customizable
  • Flexible Optical Path Lengths from 1mm to 50mm
  • Fused and Molded Cuvettes with Enhanced Chemical Resistance
  • Z Dimension of 8.5mm, 15mm, and 20mm suitable for Various of Manufacturers
cuvettes 4 windows lids

These cuvettes have 3/4 optical polished windows for fluorescence spectroscopy research. The four polished windows allow fluorescence measurements at right angles to the beam path. Standard optics cleaning procedures can be used to clean the cuvettes. The through beam windows of these quartz cuvettes can be utilized for different spectroscopic applications, despite the fact that they are built for fluorescence. Cuvettes with two polished and two frosted sides are also available from Qvarz® for these other spectroscopic measurements (see above).

Our cuvettes feature a 12.5 mm square outside diameter, a 10 mm transmitted path length through the sample, and capacities ranging from 20 mL to 125 mL. In addition to ordinary “Fused” type cuvettes (ie. VFOFO3), short or long path lengths (1, 2, 3, 5, 20, 40, 50mm) cuvettes are offered in a “Molded” type for increased chemical resistance(ie. VFOMQ). All these quartz cuvettes come with a PTFE lid to avoid contamination from dust and other particles, and each cuvette is laser etched with a letter “Q” that denotes its quartz construction on the light transmission side.

0.2 – 100 mm Dual Path Lengths Cuvettes

These quartz cuvettes are available in two different optical path lengths, each of which offers significant cost and usage savings. Furthermore, it is possible to measure the fluorescence with respect to the length of each optical path. It is no longer necessary to switch cells, which saves time because the all quartz dual path length quartz cuvettes can simply be turned 90 degrees.

VNE010 0.35mL Fluorescence Cuvette with PTFE Lid MoldedFused 4
1mm
VNE052 1.75mL Fluorescence Cuvette with PTFE Lid Molded
5mm (5 Windows)
VFOMS 2x1.75mL Fluorescence Tandem Cuvette 4 Clear Walls Molded Lighpath 10mm 1
5mm Tandem
VFOM2010 7 mL Dual Pathlength Cuvette 4 Windows Molded Lightpath 10mm or 20mm 45x22.5x12.5 mm 4
20mm (Molded)
VNE061 17.5mL Fluorescence Cuvette with PTFE Lid Molded
50mm (5 Windows)
VFOF2 0.7mL Fluorescence Cuvette with PTFE Lid Fused Flat Base Lighpath 2mm 3
2mm (Fused)
VAOF18 1.8ml Fluorescence Cuvette Fused Dual Lightpath 1mm or 10.5mm 45x12.5x3 mm 4 Clear Windows
1mm
VFOF03 2.1 mL Dual Pathlength Cuvette 4 Windows Fused Lightpath 3mm or 20mm 45x22.5x5.5 mm 2
3/20 mm
VNE056 7mL Fluorescence Cuvette with PTFE Lid Molded
20mm (5 Windows)
VNE048 100mm Lightpath Fluorescence Cuvette with PTFE Lid 5 Clear Windows 4
100mm (5 Windows)
VNE050 0.7mL Fluorescence Cuvette with PTFE Lid Molded
2mm (Molded)
VFOMQ 3.5mL Fluorescence Cuvette with PTFE Lid Molded Flat Base Lighpath 10mm 1
10mm (Molded)
VFOF08 5.6 mL Dual Pathlength Cuvette 4 Windows Fused Lightpath 8mm or 20mm 45x22.5x10.5 mm 3
8/20 mm
VNE059 10.5mL Fluorescence Cuvette with PTFE Lid Fused
30mm (Fused)
VLV50F 50.8mm 5 Fluorescence Cuvette for Lovibond
50.8/16 mm
VFOM6 1.75mL Fluorescence Cuvette with PTFE Lid Molded Flat Base Lighpath 5mm 2
5mm (Molded)
VFOMR 3.5mL Fluorescence Cuvette with PTFE Lid 5 Clear Walls Molded Lighpath 10mm 2
10mm (5 Windows)
VFOF05 3.5 mL Dual Pathlength Cuvette 4 Windows Fused Lightpath 5mm or 20mm 45x22.5x7.5 mm 2
5/20 mm
VNE058 10.5mL Fluorescence Cuvette with PTFE Lid Molded
20mm (5 Windows)
VFOB5010 17.5 mL Dual Pathlength Cuvette Bonded Lightpath 10mm or 50mm 45x52.5x12.5 mm 5
50mm (Fused)
VFOFY 1.75mL Fluorescence Cuvette with PTFE Lid Fused Flat Base Lighpath 5mm 1
5mm (Fused)
VFOFO3 3.5mL Fluorescence Cuvette with PTFE Lid Fused Flat Base Lighpath 10mm 1
10mm (Fused)
VFOFS2010 7 mL Dual Pathlength Cuvette 4 Windows Fused Lightpath 10mm or 20mm 45x22.5x12.5 mm 2
10/20 mm
VNE060 14mL Fluorescence Cuvette with PTFE Lid Molded
40 mm (5 Windows)
VFOF5020 53 mL Dual Pathlength Cuvette 4 Windows Bonded Lightpath 20mm or 50mm 55x54x24 mm 4
20/50 mm
Cuvette Racks & Inserts

Racks or inserts are required for short path length cells that have less than 12.5 mm depth, to ensure secure mounting in a standard cell holder. We offers black spacers and racks for use with 1, 2, and 5 mm path length cells.

  • Spacers allow 1, 2, and 5 mm path length cells (with less than 12.5 mm depth) to be securely mounted in a standard cell holder (for 12.5 x 12.5 mm cells)
  • Required when there is no path length adjustment facility in the cell holder
  • Quartz rack can also be used instead of spacers – they provide more flexibility as each insert provides two different pathlengths selected by rotating through 90 degrees.
VAC015 Universal Aluminum Cuvette Rack for 0.1 5 mm Path Length Cuvette 1
0.1-5 mm
VACSP1 Cuvette Acccessory Spacer for 1mm Path Length Cuvette Size 38 x 12.5 x 9 mm 4
1mm use
VACSP2 Cuvette Acccessory Spacer for 2mm Path Length Cuvette Size 38 x 12.5 x 8 mm 3
2mm use
VACSP5 Cuvette Acccessory Spacer for 5mm Path Length Cuvette Size 38 x 12.5 x 5 mm 3
5mm use

Semi Micro Narrow Width Fluorescence Cuvettes

4clear wall bonded narrow width cuvette 5
1-5 mm (Bonded)
4 windows clear semi micro fluorescence cuvettes 3
1-5mm (Fused)
VFOMS1 0.35mL Semi Micro Cuvette PTFE Lid Molded Width 1mm 4 Windows
1-5 mm (Molded)
VFOFC44 0.56mL Semi Cuvette Customized Open Top Molded Width 4x4mm 4 Windows 4
4 x 4 mm
VNE022 1.4mL Semi Micro Cuvette PTFE Lid Bonded 1
4 mm (Bonded)

Ultra Micro (<350uL) Fluorescence Cuvettes


The ultra micro quartz cuvettes with aperture windows and some narrow-width cuvettes are assembled with glue, which can be destroyed by benzene or other solutions with strong corrosive characteristics. These glued cuvettes are described as “Bonded” in the item description. These quartz cuvettes are not recommended for use with benzene, toluene, aqua regia ethanol or other corrosive liquids because they may damage the bonding between the parts and cause the cuvette to leak. 

2 13ul ultra micro cuvettes 2
2-13 uL
VFOB100N New 100uL Sub Micro Fluorescence Cuvette Black Bonded 3 Windows
100 uL
VNE032 100uL Sub Micro Fluorescence Cuvette 4 Walls Clear 5
100 uL (Bonded)
VFOB20M 20uL Sub Micro Fluorescence Cuvette All Black Bonded 3 Windows 3
20 uL
VFOB100 100uL Sub Micro Fluorescence Cuvette All Black Bonded 3 Windows 2
100 uL
VNE074 100uL Sub Micro Fluorescence Cuvette 4 Walls Clear Bonded Z dim 15mm
100 uL
VFOB45 45uL Sub Micro Fluorescence Cuvette All Black Bonded 3 Windows 1
45 uL
VFOB200N New 200uL Sub Micro Fluorescence Cuvette Black Bonded 4 Windows 4
200 uL
VNE035 100uL Sub Micro Fluorescence Cuvette 4 Walls Clear 5
100 uL (Fused)
VFOB50 50uL Sub Micro Fluorescence Cuvette All Black Bonded 3 Windows 5
50 uL
VNE031 50uL Sub Micro Fluorescence Cuvette 4 Walls Clear 3
50 uL
VFOM100 100uL Sub Micro Fluorescence Cuvette 4 Walls Clear Molded 1
100 uL (Molded)
VFOB50N New 50uL Sub Micro Fluorescence Cuvette Black Bonded 4 Windows 3
50 uL
VNE073 50uL Sub Micro Fluorescence Cuvette 4 Walls Clear Bonded Z dim 8.5mm 1
50 uL
VFOB350 350uL Sub Micro Fluorescence Cuvette 4 Walls Clear Bonded 5
350 uL (Bonded)

Short Height (<45mm) Fluorescence Cuvettes

VFOF10 0.8mL Short Height Cuvette 10x12.5x12.5 mm 4 Windows Fused Lightpath 10mm
10 mm
VFOF14 1.2mL Short Height Cuvette 14x12.5x12.5 mm 5 Windows Fused Lightpath 10mm
14 mm
VFOF27 2.5mL Short Height Cuvette 27x12.5x12.5 mm 4 Windows Fused Lightpath 10mm
27 mm
VFOB15 1.2mL Custom Cuvette 15x12x12 mm 4 Windows Bonded Lightpath 9.5mm
4 x 4 mm

Customized Fluorescence Quartz Cuvettes

VNE045 10ml Customized Hexagon Cuvette 7 Clear Walls 2
7 Clear Walls
VNE044 24mL Customized Cuvette with M6 Thread 6 Clear Walls 2
6 Clear Walls
VCLBFN 3.5mL Standard Cuvette with Funnel Custom 4 Windows Lightpath 10 mm Bonded 3
Funnel Cuvettes
VFOFC55 0.875mL Micro Cuvette Customized Open Top Fused Width 5x5mm 4 Windows 2
5×5 mm
VCOFTR 1.75 mL Triangular Cuvette 3 Windows Fused Lightpath 10mm 45x18x13 mm 3
Triangular Cell

Long Mouth Cuvettes

VAOMT02 3.5mL Cell w Quartz Tube Tube OD 8mm Height 95mm 4 Windows Lightpath 10mm Molded
10 mm
VAOMT03 3.5mL Cell w Quartz Tube Tube OD 8mm Height 135mm 4 Windows Lightpath 10mm Molded
10 mm
VAOMT05 1.75mL Cell w Quartz Tube Tube OD 8mm Height 95mm 4 Windows Lightpath 5mm Molded
5 mm
VAOMT04 3.5mL Cell w Quartz Tube Tube OD 6.5mm Height 95mm 4 Windows Lightpath 10mm Molded
10 mm

Large Tank Quartz Cuvettes

VLM6W 125mL Flow Cell with InletOutlet 6 Clear Walls Hole 1.2mm Lightpath 50 mm Molded 4
6 Clear Walls
VFOB08 3mL Custom Cuvette 33x8x23 mm 5 Windows Bonded Lightpath 530 mm
5 Clear Walls
V5ML20Q 8 mL Large Cuvette 5 Windows Quartz Cover Molded Lightpath 20mm 22x24x24 mm
8 mL
V5ML50Q 125 mL Large Cuvette 5 Windows Quartz Cover Molded Lightpath 50mm 52x54x54 mm
125 mL

And “Fused” quartz cuvettes have quartz powder applied to the edges before heating. “Molded” quartz cuvettes are assembled by first heating the quartz to a high temperature and then applying pressure to adhere the pieces together, eliminating the need for glue which is adhesive-free, direct fusion bonding. “Fused” and “Molded” fabrication method allows the cuvette with enhanced chemical resistance to hold sample solutions with corrosive properties, such as those of nitrohydrochloric acid (aqua regia), without being damaged. 


Cuvettes with PTFE Stoppers, 4 Polished Windows

  • Four Optical Clear Windows for Fluorescence Spectroscopy
  • PTFE Stopper Included with Each Cuvette to for Airtight Seal
  • Fabricated from High Transmission UV Fused Quartz (190nm – 2.5µm)
  • Various Volume Capabilities from 350µL to 3.5mL, Customizable
  • Flexible Optical Path Lengths from 1mm to 10mm
  • Fused and Molded Cuvettes with Enhanced Chemical Resistance
  • Suitable for Various Manufacturers
VFPMC 3.5mL Fluorescence Cuvette with PTFE Stopper Molded Lighpath 10mm 3

These quartz cuvettes have 4 optical polished windows for fluorescence spectroscopy experiments. The four polished windows allow fluorescence measurements at right angles to the beam path. Standard optics cleaning procedures can be used to clean the quartz cuvettes. The through-beam windows of these cuvettes can be utilized for different spectroscopic applications, despite the fact that they are built for fluorescence. Cuvettes with two polished and two frosted sides are also available from Qvarz® for these other spectroscopic measurements (see above).

VNE012 3.5mL Fluorescence Cuvette with PTFE Stopper and Bottom Stirrer Sit 3
Stirrer Cuvettes
VFPFS2 0.7mL Semi Micro Cuvette Stopper Fused Width 2mm 4 Windows 2
1-5mm (Fused)
VFPM5 0.35mL Fluorescence Cuvette with PTFE Stopper Molded Round Base Lighpath 1mm 1
1mm
narrow width stopper cuvette for fluorescence 2
1-5mm (Molded)
VFPM7 0.7mL Fluorescence Cuvette with PTFE Stopper Molded Round Base Lighpath 2mm 3
2mm
VFPFC55 0.875mL Micro Cuvette Customized Stopper Fused Width 5x5mm 4 Windows 3
5mm
VFPFA 3.5mL Fluorescence Cuvette with PTFE Stopper Fused Lighpath 10mm 4
10mm (Fused)
VFPFI10 3.5mL IR Cuvette with PTFE Stopper 4 Windows Fused Lightpath 10mm 2
10mm (IR)
VFPMC 3.5mL Fluorescence Cuvette with PTFE Stopper Molded Lighpath 10mm 4
10mm (Molded)
VCPFTR 1.75 mL Triangular Cuvette Stopper 3 Windows Fused Lightpath 10mm 45x18x13 mm 2
Triangular Cell

Our quartz cuvettes feature a 12.5 mm square outside diameter, a 10 mm transmitted path length through the sample, and capacities ranging from 350 microliters to 3.5 milliliters. In addition to ordinary “Fused” type cuvettes (ie. VFPFA), short or long path lengths (1, 2mm) cuvettes are offered in a “Molded” type for increased chemical resistance(ie. VFPM5). All these quartz cuvettes come with a PTFE stopper to avoid contamination from dust and other particles and for airtight sealing purposes. Each cuvette is laser etched with a letter “Q” that denotes its quartz construction on the light transmission side.

Fused” quartz cuvettes have quartz powder applied to the edges before heating. “Molded” cuvettes are assembled by first heating the quartz to a high temperature and then applying pressure to adhere the pieces together, eliminating the need for glue which is adhesive-free, direct fusion bonding. “Fused” and “Molded” fabrication method allows the cuvette with enhanced chemical resistance to hold sample solutions with corrosive properties, such as those of nitrohydrochloric acid (aqua regia), without being damaged. 


Cuvettes with Screw Caps, 4 Polished Windows

  • Four Optical Clear Windows for Fluorescence Spectroscopy
  • PTFE Screw Threaded Cap Included with Each Cuvette to for Airtight Seal
  • Fabricated from High Transmission UV Fused Quartz (190nm – 2.5µm)
  • Various Volume Capabilities from 700µL to 3.5mL, Customizable
  • Flexible Optical Path Lengths from 2mm to 10mm
  • Fused and Molded Cuvettes with Enhanced Chemical Resistance
  • Suitable for Various Manufacturers
VFSM3J 3.5mL Standard Fluorescence Cuvette with Screw Cap Molded New Lighpath 10mm 1

These cuvettes have 4 optical polished windows for fluorescence spectroscopy research. The four polished windows allow fluorescence measurements at right angles to the beam path. Standard optics cleaning procedures can be used to clean the quartz cuvettes. The through-beam windows of these cuvettes can be utilized for different spectroscopic applications, despite the fact that they are built for fluorescence. Cuvettes with two polished and two frosted sides are also available from Qvarz® for these other spectroscopic measurements (see above).

Our quartz cuvettes feature a 12.5 mm square outside diameter, a 10 mm transmitted path length through the sample, and capacities ranging from 700 microliters to 3.5 milliliters. In addition to ordinary “Fused” type cuvettes (ie. VFSF2), short or long path lengths (2, 5, 32mm) cuvettes are offered in a “Molded” type for increased chemical resistance(ie. VFSM41). All these quartz cuvettes come with a PTFE screw cap to avoid contamination from dust and other particles and are the airtight sealed. Each cuvette is laser etched with a letter “Q” that denotes its quartz construction on the light transmission side.

VNE029 3.5mL IR Fluorescence Cuvette with Screw Cap 1
10mm
VFSM26 3.5mL Fluorescence Cuvette with Screw Cap 5 Clear Walls Molded Lighpath 10mm 3
10mm
VFSMS1 0.35mL Semi Micro Cuvette Screw Cap Molded Width 1mm 4 Windows 3
1-5 mm
VFSM1032 11 mL Screw Cap Cuvette Molded Dual Lightpath 10mm or 32mm 4 Windows 2
10/32 mm
VFSM10 3.5mL Standard Fluorescence Cuvette with Screw Cap Lighpath 10mm 5
10mm
VFSM29 3.5mL Fluorescence Cuvette with Screw Cap Short Height 48x12.5x12.5mm 1
10mm (Short)
VFSMC3 0.6mL Semi Cuvette Customized Short 45mm Screw Cap Molded Width 3mm 4 Windows 4
3mm (Short)
VNE065 3.5mL Fluorescence Cuvette with Double Tubes Y Shape Molded 2
10mm
VFSF2 3.5mL Standard Fluorescence Cuvette with Screw Cap Lighpath 10mm 3
10mm
VFSM1 3.5mL Fluorescence Cuvette with Screw Cap Short Height 48x10x10mm 1
10mm (Short)
VFSM05 1.75mL Cell w Quartz Tube and Screw Cap Tube 7mm Height 90mm 4 Windows Lightpath 5mm Molded 4
5mm
VNE063 0.73.5 mL Fluorescence Cuvette with PTFE Valve Molded Lightpath 210 mm 4 Clear Walls 1
2/10 mm
VFSM3J 3.5mL Standard Fluorescence Cuvette with Screw Cap Molded New Lighpath 10mm 1
10mm
VFSMF2 0.7mL Fluorescence Cuvette with Screw Cap Molded Round Base Lighpath 2mm 2
2mm
VLFSC 2mL Flow Cell with PTFE Screw Cap Airtight 2 Windows Lightpath 10 mm Molded 4 1
1/10 mm
VFSM52 3.5mL Standard Fluorescence Cuvette with Inner Screw Cap Molded New Lighpath 10mm 3
10mm
VFSMR5 1.75mL Fluorescence Cuvette with Screw Cap Molded Round Base Lighpath 5mm 3
5mm
VCLMN2 0.4mL Flow Cell with PTFE Screw Cap Airtight 4 Windows Lightpath 2 or 10 mm Molded 2
2/10 mm

Fused” cuvettes have quartz powder applied to the edges before heating. “Molded” quartz cuvettes are assembled by first heating the quartz to a high temperature and then applying pressure to adhere the pieces together, eliminating the need for glue which is adhesive-free, direct fusion bonding. “Fused” and “Molded” fabrication method allows the cuvette with enhanced chemical resistance to hold sample solutions with corrosive properties, similar to those of nitrohydrochloric acid (aqua regia), without being damaged. 


Flow Through Quartz Cuvettes

For spectrophotometric experiments in which a continuously flowing sample can be passed through the observation chamber, we have a variety of flow through cells in various configurations available for purchase from us as listed below.

Tubing is used to connect flow through cells to their sample sources. Flow through cells allow the sample to pass through the cell while still being connected to the sample source. For this purpose, a pump, such as a sipper accessory, is required to draw the sample into the cell for measurement and then draw it out again. Manually filling quartz cuvettes reduces productivity by reducing sample measurement time as well as operator-induced errors that are associated with manual filling.

For automated analyses such as dissolution testing, our oval aperture cells combine low volume with excellent flow characteristics, making them a good choice. For low concentration samples, long path length flow cells are useful, and they require the long path length rectangular cell holder to hold them.

  • Flow through cells are designed for use with a sipper to reduce sample measurement time and operator-induced errors associated with manually filling cuvettes
  • 10 mm pathlength flow through cells fits any standard cell holder
  • Flow through cells feature nontransmitting, self masking black walls which improve sensitivity by eliminating stray light from measurements
  • Available with oval, round or rectangular apertures and 5.5, 8.5, 15, or 20 mm z dimensions for compatibility with various systems
  • Exceptional accuracy in terms of optical path length and parallelism
  • Unique surface flatness of the optical windows
  • High-temperature stability and high chemical resistance
  • Outstanding measurement reproducibility
  • Guaranteed transmission of >80% from 190-3500 nm
  • Flow-through cells do not include tubing/fittings (unless indicated otherwise)

Single Channel Flow Through Cuvettes

VLFEE 3.5mL Flow Cell Screw PTFE Connectors 4 Windows Lightpath 10mm Fused 1
10mm (Fused)
VNE036 35uL Flow Cell 1mm Narrow Channel 2 Windows 7
1/2 mm
VLM860 860%CE%BCL Flow Cell Quartz Tubes 2 Windows Lightpath 1mm Molded 4
1mm
VLB16 16%CE%BCL Flow Cytometry Cell Lightpath 0.2mm Detachable Window 2 Windows Bonded 1
0.2mm
VLMEE 3.5mL Flow Cell Screw PTFE Connectors 4 Windows Lightpath 10mm Molded 3
10mm (Molded)
VNE033 0.35mL Flow Cell Tube OD 4mm 2 Windows 4
1mm
VLMB15 1.5mL Flow Through Cell Bubble Free Lightpath 10mm 4 Windows Molded 4
10mm
VLB16M 16%CE%BCL Flow Cytometry Cell Lightpath 0.2mm Cell Counting 2 Windows Bonded 5
0.2mm
VLMM6 1.8mL Flow Cell M6 Screw PTFE Connectors 4 Windows Lightpath 7mm Molded
7mm (Molded)
VNE011 10mL Flow Cell Tube OD 4mm Height 86mm 2
20mm
VLM140P 14mL Flow Cell with Open Top 2 Windows Lightpath 10 mm Molded 3
10mm
VLB16D 5mm Flow Cytometry Cell Lightpath 5mm Detachable Window 2 Windows Bonded 4
5mm
VLFWW 10mmL Flow Cytometry Cell Lightpath 10mm 4 Windows Bonded 3
10mm
VLBDU 60%CE%BCL Flow Cell 2 Windows Lightpath 2mm Length 18mm Bonded 2
2mm
VNE047 150%CE%BCL Flow Chamber Cell Chamber Size o10x2mm 2
2mm
VALB06 6uL Cuvette with In Outlet Steel Connectors Pathlength 0.1mm 2 Windows Z dim 15mm 3
0.1mm
VNE089 4mL Flow Cell Tube OD 4mm Height 45mm 4 Windows 3
10mm
VLB140 16mL Flow Cell Quartz Tubes OD 8mm 4 Windows Lightpath 10 40 mm Bonded 5
40mm
VLBDU 0.2mm Dual Channel Flow Cell Cell Counting 2 Windows Flow Cytometry Bonded 1
0.2mm

Bubble Free Flow Through Cuvettes

VCLM10 3.5mL Flow Through Cell Bubble Free Lightpath 10mm 2 Windows Molded 5
10mm
VLM07 3.5mL Flow Cell Tube OD 7mm Height 60mm 4 Windows Lightpath 10mm Molded
10mm
VLM24 0.7mL Flow Cell Tube OD 4mm Height 78mm 4 Windows Lightpath 2mm Molded
2mm
VCLM35 3.5mL Flow Cell Tube OD 8mm Height 60mm 2 Windows Lightpath 10mm Molded 5
10mm
VNE033 0.35mL Flow Cell Tube OD 4mm 2 Windows 4
1mm
VLM14 0.35mL Flow Cell Tube OD 4mm Height 78mm 2 Windows Lightpath 1mm Molded 2
2mm
VLM08 3.5mL Flow Cell Tube OD 8mm Height 70mm 2 Windows Lightpath 10mm Molded 1
10mm
VNE011 10mL Flow Cell Tube OD 4mm Height 86mm 2
20mm
VLMF10 3.5mL Flow Through Cell Bubble Free Lightpath 10mm 4 Windows Molded 4
10mm
VLM04 3.5mL Flow Cell Tube OD 4mm Height 76mm 2 Windows Lightpath 10mm Molded
10mm
VLM01 0.35mL Flow Cell Tube OD 4mm Height 72mm 2 Windows Lightpath 1mm Molded
1mm
VLM05 3.5mL Flow Cell Tube OD 5mm Height 76mm 2 Windows Lightpath 10mm Molded
10mm
VLM02 0.7mL Flow Cell Tube OD 5mm Height 76mm 2 Windows Lightpath 2mm Molded
2mm

Flow Through Cuvettes with Sides Connectors

VLM060 60%CE%BCL Flow Through Cell with Side Tubes 2 Windows Lightpath 0.2mm Molded
0.2mm (Molded)
VLM600 600%CE%BCL Flow Through Cell with Side Tubes 2 Windows Lightpath 2mm Molded
2mm (Molded)
VLM090 90%CE%BCL Flow Through Cell with Side Tubes 2 Windows Lightpath 0.3mm Molded
0.3mm (Molded)
VLB150 150%CE%BCL Flow Through Cell with Side Tubes 2 Windows Lightpath 0.5mm Bonded 1
0.5mm (Bonded)
VLM150 150%CE%BCL Flow Through Cell with Side Tubes 2 Windows Lightpath 0.5mm Molded
0.5mm (Molded)
VLM300 300%CE%BCL Flow Through Cell with Side Tubes 2 Windows Lightpath 1mm Molded
1mm (Molded)

Flow Through Cuvettes with Top Connectors

These all-quartz flow-through cuvettes are ideally suited for tablet dissolution tests (TDA) and flow-through spectroscopic analysis.

VLFQU 3.5mL Flow Cell Quartz Tube 4 Windows Lightpath 10mm Fused
10mm
VLFPT 3.5mL Flow Cell Screw PTFE Connectors 4 Windows Lightpath 10mm Fused 3
10mm
VLMPT 3.5mL Flow Cell Screw PTFE Connectors 4 Windows Lightpath 10mm Molded 3
10mm
VALB600S 600uL Cuvette with 2 Screw Connectors Pathlength 20mm 2 Windows Bonded 3
20mm

Custom Design Quartz Cuvettes

In this above product catalog, you will find our most popular Best Sellers that our customers use the most frequently. If you are unable to locate a suitable product in this selection, please contact us or use the cuvette finder on our website to locate the product of your choice. We will be delighted to work with you to develop individual and tailored solutions for your measurement requirements.

VCK09 Custom Cuvette Example Flow Cell for Fluorescence Digestion Micro Flow Channe 1
Quartz Cuvettes for UV vis IR Spectroscopy: 500 Items for Easy Ordering 242
VCK01 Custom Laser Absorption Cell Example 1
Quartz Cuvettes for UV vis IR Spectroscopy: 500 Items for Easy Ordering 243
custom ultra micro cuvette 1
Quartz Cuvettes for UV vis IR Spectroscopy: 500 Items for Easy Ordering 244
VCK04 Custom Flow Cell Example 2 Ends Open Customizable 4
20mm

We will be pleased to create custom-designed quartz cuvettes and cells according to your requirements and specifications, within the limits of technical feasibility. We make every effort to use standard cells as the basis for these whenever possible, primarily for cost reasons. If you are interested in custom designs, please submit a technical drawing to us for consideration. After that, you will be sent a quotation, and once you have given your approval, this drawing will be used as the agreed-upon specification for manufacturing to begin.

FAQs



Why is my choice of cuvette important for reliable measurements?

The cuvette used to measure a sample is part of the optical system of the spectrophotometer. As a result, the position, geometry, and quality of the cuvette can all affect the accuracy and precision of absorbance measurements and should be carefully monitored.

Why use quartz cuvettes over glass or plastic cuvettes in a spectrophotometer?

For the following 3 reasons, quartz material cuvettes are preferred for spectroscopic measurements:
 
1. Transparent to UV ranges
 
Depending on the wavelength, the cuvette’s material can cause its own absorption. Ordinary optical glass contains many substances other than silicon dioxide, which makes it translucent over the UV range, but quartz is practically pure silicon dioxide (silica), which makes quartz cuvettes transparent over the whole UV/Vis measurement range (190-2500nm). Disposable plastic cuvettes are frequently only transparent in the visible spectrum (320-2500nm).
 
Although ultraviolet waves are invisible to human senses, they have a shorter wavelength than visible light. When we use glass instead of quartz, the glass absorbs UV radiation, but quartz does not.
 
If wavelengths in the ultraviolet region (below 300 nm) are utilized, cuvettes made of quartz glass or a special type of plastic with appropriate transparency in this range must be used.
  
2. Better Thermal Properties
 
The melting point of quartz is much higher than that of glass. Quartz cuvettes are more durable than plastic or glass cuvettes.
 
3. Better Chemical Compatibility
 
Quartz material chemical compatibility is stronger than glass, allowing it to handle a wider variety of substances that would melt or harm a glass cuvette.


What are typical samples of spectroscopy?

long short path length cuvettes with lids

The vast majority of UV/Vis spectroscopy samples are solutions put in a cuvette for measurement. Cuvettes are tiny glass or quartz containers with a rectangular shape. The laser beam is usually intended to travel a distance of 10 mm through the contents, however, the light path length might range from 0.1 or 0.2 mm to 100 mm. The sample quartz cuvettes usually contain a very dilute solution of the chemical you’re measuring. Cuvettes with a long optical path length are typically used to test highly dilute sample solutions. According to Beer’s Law, the greater the sensitivity of analysis, the longer the sample path length should be.

The solvent is decided so that no substantial quantity of light in the wavelength range of interest is absorbed by it. The quartz cuvettes in most instruments are intended to fit inside a 10 mm square container.

Other non-solution sample types are commonly measured in high-performance UV/Vis/NIR types of equipment. Solid materials, both transparent and opaque, can be assessed with the right diffuse reflectance accessory, such as an integrating sphere. Samples such as mirrors and optical coatings can be measured using specular reflection accessories.


What is the material difference between cuvettes?

measurements of different material

At the measured wavelength, the cuvette fabrication material must have no absorption. Glass and quartz are two common materials for cuvettes. For disposable cells, polystyrene (PS) and polymethylmethacrylate (PMMA) are commonly chosen. The wavelengths for which the various types of cuvettes and cells can be employed are shown in the right figure. The detectable wavelength range varies from different cuvette materials.

The transmission spectra obtained for several types of cells using air as the measuring object are shown in the figure. There is no absorption by the cells in the measurement wavelength ranges indicated in the figure.

There’s also the issue of cuvette chemical resistance, in addition to desired wavelength measurement ranges. Glass and quartz are chemically resistant, with the exception of severely alkaline solutions. The chemical resistance of plastic disposable cuvettes, on the other hand, varies depending on the substance, thus while choosing a cell for measurement special care is required. Another thing to keep in mind is that the optical path lengths of individual disposable cuvettes, which are usually discarded after usage, vary slightly. This might result in quantitative value errors.

Glass cuvettes have a measuring range of around 320 nm to 2500 nm, which is narrower than quartz cuvettes since glass is opaque in the ultraviolet. They are, however, a practical and less expensive alternative to quartz cells provided measurements are not required in the ultraviolet wavelength range below roughly 320 nm. These cuvettes are frequently labeled “G.”

When glass or quartz cuvettes are used, a series of measurements are performed to remove variations in optical path lengths from cell to cell. Disposable cells are constructed of plastic and may be thrown away once they’ve been used. Unlike the glass and quartz cells mentioned above, each sample is placed in a separate disposable cell. Because differences in optical path length occur often from cell to cell, obtaining correct data is challenging. When great measurement precision is not necessary, disposable cells are used. They are helpful for measuring biological samples were washing the material out of the cell is difficult. Disposable cells are not capable of measuring samples that destroy plastics, such as organic solvents, because they are constructed of plastic. They are also opaque in the ultraviolet and near-infrared areas, only limited to observations in the visible light spectrum range.


Why are “short path length” cuvettes used? (for too concentrated samples)

absorption spectra of toluene

When high-concentration samples are diluted, a 10 mm cuvette can be used to measure them. However, there are certain samples that are difficult to dilute. Diluting a sample, for example, may result in a change in absorbance because of the interaction with the solvent (i.e., a shift in the peak wavelengths).

When the absorbance is high and dilution is difficult, a short path length cuvette can be used to measure the absorbance. Short path length cuvettes come in 0.2 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, and 5 mm optical path lengths. The findings of analyzing toluene using a 1-mm cell and a 10-mm cell are shown in the left figure. The 1 mm cell has far less absorption saturation (i.e., 0% transmittance) than the 10 mm cell.

Solution analysis in the near-infrared wavelength range is a well-known use of measurement employing short path length cuvettes. When a 10 mm cell is used for near-infrared measurements, saturation typically occurs due to solvent absorption, making it difficult to determine the sample’s absorption. To avoid absorption saturation caused by the solvent, a short path length cuvette is used.

The optical path length of the cell is decided by the size of the absorbance or transmittance in low- and high-concentration samples.

Spacers or inserts are required for short path length cells that have less than 12.5 mm depth, to ensure secure mounting in a standard cell holder. QVARZ® offers black spacers and quartz block inserts for use with 1, 2, and 5 mm path length cells


Why are “long path length” cuvettes used? (for too diluted samples)

absorption spectra of potassium permanganate

Many different types of solution analysis use cuvettes with a 10 mm optical path length. However, if the sample concentration is low, a cell of this size may not be able to provide adequate absorbance. Although 10 mm cells may be used when concentrating the samples, concentration could be difficult if the material vaporizes or experiences a chemical change during the concentration process. In such instances, adopting a “long path length cuvette” for measuring is more effective. Long path length cuvettes are available in optical path lengths of 20 mm, 30 mm, 40 mm, 50 mm, and 100 mm. The absorbance rises in direct proportion to the cell’s optical path length. The results of testing a 10 mg/L potassium permanganate solution with a 10 mm path length cell and a 100 mm path length cell are shown in the figure on the right. The absorbance of the 100 mm cell is ten times that of the 10-mm cell, as can be observed.

The measuring of water turbidity is a well-known application of analysis utilizing long path length cuvettes. Low turbidity samples are often analyzed using 50 mm and 100 mm cells.

How do fingerprints on cuvettes affect absorbance?

When residuals, such as fingerprints or grease, are deposited on the cuvette windows, the absorbance increases due to the presence of extra absorbent components. This can be avoided by cleaning thoroughly before and after use. After the windows have been cleaned, extra caution must be exercised to prevent touching them.
 
How to clear fingerprints on cuvettes? 
 
Wipe the outside of the cuvette with a Kimwipe to remove any fluids or fingerprints. This method prevents scratching of the cuvette in locations where the light will pass through. Scratches on the cuvette can result in inaccurate measurements.


How to clear the cuvettes?

This is a popular question for which there is no definitive solution. In fact, there is no specific published method of cleaning. And why?

The reason for this is due to the wide range of samples that are evaluated. A large number of cleaning procedures are necessary due to the wide variety of analytical samples. However, because detailing all ways is unrealistic, it does not contribute to the solution of the problem. As a result, we’ve included a handful of the most typical cleaning procedures below. These techniques can be divided into a few categories. The first group employs water as a solvent, whereas the second uses an organic solvent.

1) Using Water as a Solvent – Clean with purified water first, then ethanol, then dry. Soak cells in a commercial cleaning solution developed particularly for cleaning cells (for around 10 minutes at 30 to 50 °C) for more serious contamination. After that, rinse the cell with distilled water and immerse it in a dilute nitric acid and hydrogen peroxide solution (for about 30 minutes). Finally, rinse the cell with distilled water and place it in an airtight container.

2) Cleaning with Organic Solvents (Only Fused or Molded Types)- Clean with ethanol or acetone after cleaning with the organic solvent, and then clean using the same approach as mentioned above for the aqueous solution.

3) Scrub the cell softly with a cotton swab if the pollution is obstinate. Avoid alkaline cleaning solutions, which can disintegrate glass, and ultrasonic cleaning methods, which can harm the cell.