UV Cuvettes

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UV Cuvettes

Product and ordering information for UV Cuvettes. BRAND Disposable cuvettes; Excellent for DNA, RNA, and protein analysis between 230-900nm; Macro, semi-micro and ultra-micro sizes (8.5 & 15mm window height); Good chemical resistance.

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Description

Eliminate the need for cleaning, and the associated risk of sample carryover and cross-contamination. BRAND's UV-transparent, disposable cuvettes replace expensive, fragile quartz cuvettes and are excellent for DNA, RNA, and protein analysis between 230-900nm. Made from a proprietary polycyclical olefin, they can be used with most polar solvents, acids and alkaline solutions. In addition to the macro and semi-micro sizes, UV-cuvettes are available in ultra-micro sizes that require only 70µL of sample volume. The ultra-micro cuvettes are also available individually-wrapped and independently-certified DNA-, DNase-, RNase-free for an extra degree of sample protection. All BRAND cuvettes are manufactured from scratch-resistant materials, and are grouped by manufacturing mold cavity number to ensure the lowest variation in extinction coefficient.

Product No. & Specs



BRAND UV-Transparent Disposable Cuvettes

  Description
Filling Vol.
Window
Dimensions, mm
Light
Path, mm
Pack of
Cat. No.
Min.
Max.
  Macro
2.5mL
4.5mL
10 x 35
10
100
759170
  Semi-micro
1.5mL
3.0mL
4.5 x 23
10
500
759165
  Semi-micro
1.5mL
3.0mL
4.5 x 23
10
100
759150
  Ultra-micro
  (15mm window height)
70µL
550µL
2 x 3.5
10
500
759230
  Ultra-micro
  (15mm window height)
70µL
550µL
2 x 3.5
10
100
759220
  Ultra-micro, individually wrapped
  (15mm window height)
70µL
550µL
2 x 3.5
10
100
759235
  Ultra-micro
  (8.5mm window height)
70µL
850µL
2 x 3.5
10
500
759210
  Ultra-micro
  (8.5mm window height)
70µL
850µL
2 x 3.5
10
100
759200
  Ultra-micro, individually wrapped
  (8.5mm window height)
70µL
850µL
2 x 3.5
10
100
759215

Selection Chart

Cuvette Chemical Compatibility Chart

For help selecting Ultra-Micro Cuvettes for your spectrophotometer – Click here

FAQs

What is the light path of the BRAND cuvettes?

All BRAND cuvettes have a light path of 10mm.

What is the difference between your PS, PMMA and UV-Cuvettes?

Polystyrene (PS) cuvettes are the least expensive, however they have the lowest chemical resistance, and are only suitable for visible light applications, with a lower wavelength limit of around 340nm. Polymethyl methacrylate (PMMA or "acrylic") cuvettes extend that range to about 300nm, or slightly into the near UV range, and have slightly greater chemical compatibility. BRAND UV-Cuvettes use a proprietary plastic to allow measurement as low as 230nm, and has resistance to many polar organics as well as many acids and bases.

What does "mold cavity matched" mean?

Cuvettes are injection molded plastic. No matter how close the tolerances are in the molds, there will be some variance. BRAND cuvettes are sorted during the manufacturing process so that each package of cuvettes contains only cuvettes made from the same mold, minimizing the cuvette-to-cuvette variance.

What is the maximum temperature the UV cuvettes can tolerate?

The UV cuvettes should not be used above 70°C.

Do you offer sterile UV-Cuvettes? / Can the UV-Cuvettes and caps be autoclaved?

Ultra-micro UV-Cuvettes are offered individually wrapped, DNA-, DNase-, RNase-free. However, because they have not undergone a sterilization procedure, they can not be called sterile. This is true of all disposable UV-transparent cuvettes on the market - none of them have undergone a sterilization procedure.
The UV-cuvettes cannot be autoclaved. Autoclaving destroys the optical properties of the UV-Cuvettes. The caps are made of polyethylene, and as such can not be autoclaved. They are, however, manufactured under clean room conditions.

My results with your UV-Cuvettes are different than with quartz. What's happening?

While our UV-Cuvettes allow enough light to pass to perform accurate spectrophotometry down to 220nm, they are not as transparent as quartz. When using UV-Cuvettes, any reference measurements should also be done with UV-Cuvettes.

I have selected the correct size UV-Cuvettes for my spectrophotometer, but still am not getting appropriate results. Why?

If you are using the appropriate window height (z-dimension) ultra-micro UV-Cuvette for your spectrophotometer, and are not getting appropriate results, it is likely due to one of two different problems.

  • Extremely dilute samples: Because the proprietary plastic has a higher absorbance than quartz, extremely dilute samples may not differ substantially from background, so you may have no other choice than to use a quartz cuvette.
  • Light beam width: Some spectrophotomers have abnormally wide light beams that can be refracted by the side walls of the cuvette. When using ultra-micro sized samples, these spectrophotometers require the use of black-masked quartz cuvettes to overcome this deficiency.

Do you sell four-sided-clear flourimetry cuvettes?

Yes.

Tech Info

Cuvette Transmission Graph

BRAND UV-Cuvettes
Comparison with Quartz and other Plastic Cuvettes.

Accessories & Parts

The following accessories are available for UV-Cuvettes:

    Cuvette Caps - Available in 4 colors for easy sample identification.
    Cuvette Rack - PP rack with 16 numbered positions.

To order click here

Literature

Catalog Page
BRAND UV-Cuvettes flyer

Sample Request

To request a free sample click here and complete the sample request form.