(VAOBS4) 1.4mL Semi-Micro Cuvette, PTFE Lid, Bonded, Width 4mm, Black Walls

Weight	120 g
Brand	Qvarz
Resistant to Chemicals	No

SKU: VAOBS4

(VAOBS4) 1.4mL Semi-Micro Cuvette, PTFE Lid, Bonded, Width 4mm, Black Walls

(VAOBS4) 1.4mL Semi-Micro Cuvette, PTFE Lid, Bonded, Width 4mm, Black Walls - Image 2

(VAOBS4) 1.4mL Semi-Micro Cuvette, PTFE Lid, Bonded, Width 4mm, Black Walls - Image 3

(VAOBS4) 1.4mL Semi-Micro Cuvette, PTFE Lid, Bonded, Width 4mm, Black Walls - Image 4

~~$33.00~~ Original price was: $33.00.$30.00Current price is: $30.00.

In Stock

This semi micro volume cuvette is for absorption applications, with a path length of 10 mm. For Aqueous Samples Only. Use up to 100°C. The price is for 1 piece.

In Stock

Type: Bonded, For Aqueous Samples Only

SKU: VAOBS4 Categories: Semi Micro Cuvettes, All Cuvettes & Cells, Bonded Cuvettes, Cuvettes & Flow Cells, Micro Cuvettes <3.5mL, Narrow Width Cuvettes, Open Top Cuvettes, Products, Spectrometer Cuvettes Tags: narrow width cuvette, open top cuvette, spectrometer cuvette

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Description

VAOBS4 – 1.4 mL Semi-Micro Quartz Cuvette (Bonded, 4 mm Width, 2 Windows, PTFE Lid, Black Walls)

The VAOBS4 is a precision bonded quartz cuvette with black walls, designed for UV/VIS absorption spectroscopy with medium sample volumes and high sensitivity.
With a 4 mm internal width and a 10 mm optical path length, this cuvette provides excellent optical clarity, reduced stray light, and superior measurement reproducibility.

Key Features

Sample volume: 1.4 mL (1400 µL) — suitable for semi-micro applications.
4 mm internal width: balances light transmission with enhanced sensitivity.
10 mm optical path length: standard geometry compatible with most spectrophotometers.
2 optical windows: designed for stable and accurate absorbance readings.
Black walls: minimize stray light and increase signal-to-noise ratio for sensitive measurements.
Bonded fabrication: path length tolerance ±0.06–0.08 mm for consistent results.
Wavelength range: UV/VIS (190–2500 nm).

Typical Applications

General UV/VIS absorption spectroscopy
Protein and nucleic acid quantification
Clinical and pharmaceutical assays
Environmental and biochemical analysis

Cuvette Specifications

Type	Semi Micro Cuvette	Optical Path Length	10 mm
Article No.	VAOBS4	Volume	1400 µL
Measuring Method	Absorption Cells	Base Type	Flat
Number of Windows	2	Wavelength Range	UV/VIS (190–2500 nm)
Outside Dimensions
Height	45 mm	Width	12.5 mm
Depth	12.5 mm
Inside Dimensions
Width (Inside)	4 mm	Depth (Inside)	10 mm
Center Height (Z)	8.5–20 mm	Fabrication Method	Bonded*
Package	Cell & PTFE Lid

About Bonded Fabrication

Produced by bonding precision-ground quartz plates, providing high-quality optical performance at a cost-effective price.
Path length tolerance: ±0.06–0.08 mm.
Compatible with aqueous and mild solvents (avoid HF, toluene, acetone, and strong organic solvents).

About Black Walls

Black coating on the sides effectively suppresses stray light and internal reflections.
Improves measurement accuracy and sensitivity for low-signal applications.
Ideal for trace-level UV/VIS spectroscopy and demanding analytical work.

Usage Notes

Suitable for semi-micro volume UV/VIS absorbance measurements.
Best for applications requiring stable signals and low background interference.
Store properly to avoid damage to black wall coating and quartz surfaces.

Note: Black-walled bonded quartz cuvettes offer excellent sensitivity and measurement stability, making them an ideal choice for precise analytical work.

Comparison of Fabrication Types

1	2	3	4
	*Molded	*Fused	*Bonded / Glued
UV vis ( 190- 2500 nm)	Yes	Yes	Yes
Transmission Matched	On Request	No	No
Transmission > 80%	Yes	Yes	Yes
Resistant to Acids and Bases (except hydrofluoric acid)	Yes	Yes	No
Resistant to Organic Solvents	Yes	Yes	No
Usable upto 600°C (1112°F)	Yes	Yes	Yes
Usable upto 1200°C (2192°F)	Yes	No	No
0 Variations Reading	On Request	No	No
Fabrication	Molded	Assembled with Quartz Powder	Assembled with Glue
Adhesives	No	No	Yes
Storage	Short Term Storage	Clean After Use	Clean After Use
Available Material	Fused Quartz Material
Note	Molded 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.

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.

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 cuvettes are 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 quartz 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. Fluorometry cuvettes - QVARZ brings two decades of experience molding high-quality spectrophotometry cuvettes to new four-sided clear cuvettes for fluorometry. 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.
To the best of our knowledge, the technical information provided here is accurate. However, Qvarz.com assumes no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.