Cuvettes and Cells available for Customization
Introduction 🔬
Cuvettes and optical cells are essential components in a wide range of spectroscopic and analytical workflows. Whether you’re performing UV-Vis absorbance, fluorescence emission, flow-through kinetics, or reflection-based analysis, the design and material quality of your sample cell directly impact your measurement accuracy and experimental success. This guide provides a detailed technical overview of the custom-fabricated cuvettes and cells offered by Qvarz—a trusted supplier specializing in high-precision, high-performance optical components. Each section introduces a specific category of cuvette, from standard rectangular formats to advanced microvolume, flow-through, and demountable configurations. You’ll find in-depth coverage of:- Key design and optical features
- Advantages for various scientific applications
- Manufacturing strengths and customization flexibility
- Compatibility with spectrophotometers, fluorometers, and process instruments
For most routine UV/Vis absorbance measurements, standard rectangular cuvettes are the go-to choice. These cells feature two optically polished windows and follow internationally recognized dimensions—making them compatible with the vast majority of spectrophotometers and fluorometers. The 10 mm path length is the industry standard, though variants ranging from 1 mm to 100 mm are readily available for applications requiring altered sensitivity or concentration ranges.
Thanks to their robust geometry and straightforward compatibility, rectangular cells remain the most widely used format in spectroscopic analysis. If you’re considering longer path lengths (e.g., 20 mm or 50 mm), consult your instrument’s specifications—some models may require a dedicated holder or adapter for non-standard cell sizes.
Standard Rectangular Cuvettes
Description: Standard rectangular cuvettes are the most common spectroscopic cells. They have a four-sided rectangular (often square) cross-section and typically a 10 mm optical path length, adhering to international size standards for spectrophotometers. Two sides are clear optical windows (or four clear sides for fluorescence versions), and they hold about 3.5 mL in the standard 10 mm path format.
Key Features:
- Standard Path Length & Dimensions: Usually 10 mm path length (with available variants from ~1 mm up to 100 mm path). Outer dimensions (~12.5 × 12.5 mm square) meet industry standards to fit most instruments.
- High Optical Quality: Made of UV-VIS-IR transparent quartz or optical glass, with two polished windows providing clear, low-distortion light paths for accurate absorbance readings.
- Versatility: Can have 4 optical windows (clear on all sides) for fluorescence or cross-measurements. Often supplied with an open top (for a lid or stopper) but can also come with caps if needed for airtight use.
Fabrication & Customization:
- Precision Construction: Manufactured with tight tolerance on the 10 mm path (typically within ±0.01 mm) to ensure consistent optical path length across cells. The optical faces are finely ground and polished for maximum transmission and minimal beam distortion.
- Fusion-Bonded Assembly: Premium cells are often fused from quartz pieces without adhesives, or even molded as one piece, yielding a seamless, leaktight cell that resists chemical attack and withstands extreme temperatures. This means standard quartz cuvettes are highly chemical-resistant and can even be used at elevated temperatures (quartz cells tolerate up to ~600–1200 °C in some cases).
- Custom Options: Qvarz can tailor rectangular cells in various path lengths, volumes, or materials (e.g. IR-grade quartz for infrared use) as needed, while maintaining the standard external footprint for compatibility.
Typical Use Cases:
- UV/VIS Absorbance Spectroscopy: Ideal for routine concentration measurements (e.g. DNA, protein assays, chemical absorbance) in spectrophotometers. The 10 mm path gives a convenient baseline sensitivity for most analyses.
- Fluorescence Measurements: Four-window rectangular cuvettes are used in fluorometers for right-angle fluorescence detection. Quartz material with four clear sides allows excitation and emission light to pass with minimal interference.
- General Analytical Chemistry: Employed in colorimetry, turbidity (with appropriate orientation), and any lab application requiring a known path length cell for liquids. The robust quartz construction handles a wide range of solvents and samples without leaching or reacting.
Instrument Compatibility:
- Universal Fit: These cells are designed to fit into standard 1 cm pathlength cuvette holders in spectrophotometers and fluorometers. Their dimensions and clear window alignment conform to international spectrometer standards, so almost any rectangular-cell instrument can accept them.
- Path Length Variants: If using alternate path lengths (e.g. 20, 50, 100 mm cells for increased sensitivity), an instrument may require adapter holders or special alignment – users should consult their spectrometer’s documentation for compatibility with larger cells. Standard 10 mm cells generally insert without any adapter.


(VNE063) 0.7/3.5 mL Fluorescence Cuvette with PTFE Valve, Molded, Lightpath 2/10 mm, 4 Clear Walls


(VNE012) 3.5mL Fluorescence Cuvette with PTFE Stopper and Bottom Stirrer Sit, Fused, Lightpath 10mm

(VP020) Disposable Standard Fluorescence Cuvettes, 4.5mL, Lightpath 10mm, 285 – 750 nm, UV-vis, Isobutylene Plastic

(VP010) Disposable Standard Fluorescence Cuvettes, 4.5mL, Lightpath 10mm, 340 – 750 nm, Visible Range, Polystyrene Plastic
(VFSM10) 3.5mL Standard Fluorescence Cuvette with Screw Cap, Molded, Flat Bottom, Lightpath 10mm
(VFSF2) 3.5mL Standard Fluorescence Cuvette with Screw Cap, Fused, Lightpath 10mm
(VFSM3J) 3.5mL Standard Fluorescence Cuvette with Screw Cap, Molded, New, Lightpath 10mm
(VFSM41) 3.5mL Standard Fluorescence Cuvette with Screw Cap, Molded, Round Bottom, Lightpath 10mm
(VFSM52) 3.5mL Fluorescence Cuvette with Inner Screw Cap, Molded, New, Lightpath 10mm
(VASM63) 3.5mL Standard Absorption Cuvette with Screw Cap, Flat Base, Lightpath 10mm
(VASM7) 3.5mL Standard Absorption Cuvette with Screw Cap, Molded, Round Bottom, Lightpath 10mm


(VASF1) 3.5mL Standard Spectrometer Cuvette with Inner Screw Cap, Fused, New, Lightpath 10mm
(VFSM26) 3.5mL Fluorescence Cuvette with Screw Cap, 5 Clear Walls, Molded, Lightpath 10mm
(VFSM1) 3mL Fluorescence Cuvette with Screw Cap, Short Height 48x10x10 mm
(VFSM29) 3mL Fluorescence Cuvette with Screw Cap, Short Height 48×12.5×12.5 mm
(VFPFA) 3.5mL Fluorescence Cuvette with PTFE Stopper, Fused, Lightpath 10mm
(VFPMC) 3.5mL Fluorescence Cuvette with PTFE Stopper, Molded, Lightpath 10mm
(VAPFE) 3.5mL Absorption Cuvette with PTFE Stopper, Fused, Round Base, Lightpath 10mm
(VAPMG) 3.5mL Absorption Cuvette with PTFE Stopper, Molded, Round Base, Lightpath 10mm
(VAOFIB) 3.5mL Absorption Cuvette with PTFE Lid, Fused, Round Base, Lightpath 10mm
(VAOMK) 3.5mL Absorption Cuvette with PTFE Lid, Molded, Round Base, Lightpath 10mm
(VAOFL1) 3.5mL Absorption Cuvette with Volume Markings, PTFE Lid, Fused, Round Base, Lightpath 10mm
(VFOFO3) 3.5mL Fluorescence Cuvette with PTFE Lid, Fused, Flat Base, Lightpath 10mm
(VFOMQ) 3.5mL Fluorescence Cuvette with PTFE Lid, Molded, Flat Base, Lightpath 10mm
(VFOMR) 3.5mL Fluorescence Cuvette with PTFE Lid, 5 Clear Walls, Molded, Lightpath 10mm
(VFOMS) 2×1.75mL Fluorescence Tandem Cuvette, 4 Clear Walls, Molded, Lightpath 10mm
Short Customized Cuvettes
(VFSM29) 3mL Fluorescence Cuvette with Screw Cap, Short Height 48×12.5×12.5 mm
(VAOF56) 1.5mL Short Height Cuvette, 20×12.5×12.5mm, 2 Windows, Fused, Lightpath 10mm
(VFOF10) 0.8mL Short Height Cuvette, 10×12.5×12.5 mm, 4 Windows, Fused, Lightpath 10mm
(VFOF14) 1.2mL Short Height Cuvette, 14×12.5×12.5 mm, 5 Windows, Fused, Lightpath 10mm

(VFOF40) 14mL Custom Cuvette, 40x26x26 mm, 4 Windows, Fused, Lightpath 20mm
(VFOF47) 40mL Custom Cuvette, 47x34x34 mm, 4 Windows, Fused, Lightpath 30mm
(VFOF22) 1.4mL Custom Cuvette, 22×10.5×10.5 mm, 4 Windows, Fused, Lightpath 8mm
(VFOB15) 1.2mL Custom Cuvette, 15x12x12 mm, 4 Windows, Bonded, Lightpath 9.5mm
(VFOB17) 1.6mL Custom Cuvette, 17×12.5×13 mm, 4 Windows, Bonded, Lightpath 10.5/10 mm
(VFOB20) 1.9mL Custom Cuvette, 20x12x12 mm, 4 Windows, Bonded, Lightpath 10 mm
(VFOF104) 110uL Customized Cuvette, 10x6x6 mm, 4 Windows, Fused, Lightpath 4mm
(VFOM104) 110uL Customized Cuvette, 10x6x6 mm, 4 Windows, Molded, Lightpath 4mm
(VFOM103) 110uL Customized Cuvette, 10x6x6 mm, 4 Windows, Molded, Lightpath 3.5/4mm
(VFSMC3) 0.6mL Cuvette, Customized Short 45mm, Screw Cap, Molded, Width 3mm, 4 Windows
Long Mouth Cuvettes - Available with Quartz Tube on Request






(VFSM05) 1.75mL Cell w/ Quartz Tube and Screw Cap, Tube 7mm, Height 90mm, 4 Windows, Lightpath 5mm
Triangular Cuvettes


Small Footprint Cells
(VFSM1) 3mL Fluorescence Cuvette with Screw Cap, Short Height 48x10x10 mm







Wide Windows Cells

(VNE039) 22 mL Customized Cuvette, 2 Windows, No Cover, Fused, Lightpath 25mm, 38x28x28 mm

(VNE023) 1/3mL Customized Cuvette with Conical Bottom, 2 Windows, Lightpath 3/6mm, Fused







































Wide Windows Cells
(VFOMS) 2×1.75mL Fluorescence Tandem Cuvette, 4 Clear Walls, Molded, Lightpath 10mm




(VFSMC3) 0.6mL Cuvette, Customized Short 45mm, Screw Cap, Molded, Width 3mm, 4 Windows






Detachable Cells




(VLMD01) 30 μL Ultra Micro Detachable Cuvette, Lightpath 0.1mm, 2 Windows, Molded





Large Tank Cells - Customizable
(VFOB08) 3mL Custom Cuvette, 33x8x23 mm, 5 Windows, Bonded, Lightpath 5/30 mm























Customized Sub-Micro Cells
(VAOB50) 50uL Sub Micro Absorption Cuvette, All Black, Bonded, 2 Windows
(VAOB100) 100uL Sub Micro Absorption Cuvette, All Black, Bonded, 2 Windows







(VFOB200N) New 200uL Sub Micro Fluorescence Cuvette, Black, Bonded, 4 Windows



(VFOB20M) 20uL Sub Micro Fluorescence Cuvette, All Black, Bonded, 3 Windows

(VFOB50N) New 50uL Sub Micro Fluorescence Cuvette, Black, Bonded, 4 Windows

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(VFOB200) 200uL Sub Micro Fluorescence Cuvette, 4 Walls Clear, Bonded
FLow Through Cuvettes and Cells
Flow cells are used in chromatography and production systems to measure samples with continuous flow. They’re also utilized in sipper systems, which allow for the aspiration of specific samples into the cell. Because each application has a distinct compromise of sample amount, flow pattern, pathlength, and tubing requirements, flow cells come in a variety of shapes and sizes. We manufacture a broad variety of flow cells and have made every effort to make the choosing procedure as simple as possible. If you have any technical questions, please e-mail us and we will respond as soon as possible.
Bubble Free Flow Through Cuvettes











Flow Through Cuvettes with Side Connectors






Single Channel Flow Through Cuvettes




(VLMM6) 1.8mL Flow Cell, M6 Screw PTFE Connectors, 4 Windows, Lightpath 7mm, Molded



(VLM860) 860μL Flow Cell, Quartz Tubes, 2 Windows, Lightpath 1mm, Molded






Flow Through Cuvettes with Top Connectors




























Customized 2 Ends Open Cuvettes














(VCK10) Custom Flow Cell Example, 2 Ends Open, Customizable
Reflection Measurements Cells - Customizable



















Non-Stock Customizable Cuvettes and Cells


(VCK09) Custom Cuvette Example, Flow Cell for Fluorescence Digestion, Micro Flow Channel


(VCK21) Custom Fluorescence Cuvette for Stirrer, Lightpath 10 mm, 4 Windows, Fused



(VCK18) Custom Glass Flow Cytometry Cells, 30x28x4.7mm, Lightpath 0.2 mm, Customizable

(VCK17) Custom Flow Cuvette Example, Flow Cell with Aluminum Shell Protection, Fused, Customizable



(VCOF30) Custom Cuvette for Stirrer, Lightpath 30 mm, 4 Windows, Wall Thickness 2 mm, Fused

(VCK14) Custom Cuvette Example, Flow Cell for Environmental Applications, Fused, Customizable

(VCK13) Custom Cuvette Example, Micro Cuvette with Stopper


(VCK11) Custom Cuvette Example, Flow Cell for Particle Analysis, Customizable

(VCK10) Custom Flow Cell Example, 2 Ends Open, Customizable



(VCK07) Cuvette for Automatic Biochemical Analyzer, Inner Round Corner

(VCK06) Custom Cuvette Example, 6ul Custom Flow Cell with Black/White Quartz


(VCK05) Custom Cuvette Example, Flow Cell for Environmental Instrument

(VCK03) Custom Cuvette Example, Flow Cell for COD Ammonia Nitrogen Reaction

(VCK02) Custom Cuvette Example, Flow Cell

(VCK01) Custom Laser Absorption Cell Example





Cuvette Manufacturing for Spectrophotometers in a Short Lead Time
Did you know that custom-made cuvettes are now available at a price that every lab can afford? We work with you to obtain the cuvette you need at a price you can afford, whether it’s 1 cuvette or 100.
We use state-of-the-art technology and cuvette production processes at our ISO 9001-certified facility. Our technicians have all mastered their trade and strive to improve in every manner they can. Our facility is set up in such a way that we can deliver your bespoke cuvette in as little as a few days to longest 4-6 weeks.
OUR OBJECTIVE
When we take on a custom spectrophotometer cuvette project, we just have one objective in mind: to please you by delivering your components on time and at a great price. We serve all of our customers equally, with no preference given to those who place larger orders. You’re a human being like us, and you deserve to be treated with respect and politeness.
HOW DO I OBTAIN A QUOTE?
We have a straightforward quote procedure in place. The following is how it works:
- Send us your drawing.
- Our engineers go through the sketch and provide you a quote.
- Within 1-2 days, we will email you the pricing.
It’s as simple as that to place an order.
Now is the time to consider whether there are any experiments that you were unable to do because you lacked the proper cuvette. Consider how simple it would be to do this experiment with a high-quality spectrophotometer cuvette that was custom-made to your exact requirements. Consider how you’d feel if you made that breakthrough discovery.
So email us your drawing and we’ll start to work on producing you the spectrophotometer cuvette of your dreams.