Disposable Cuvettes for Protein Assays

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Overview

Disposable Cuvette Performance Specifications
Spectral scan of Bio-Rad's standard cuvette

Spectral scan of Bio-Rad's standard cuvette. Disposable cuvette performance specifications were obtained using a Beckman DB spectrophotometer, empty cuvette vs. air path, a tungsten lamp, a standard photomultiplier, and a standard slit program.

Bio-Rad's disposable cuvettes are molded from polystyrene, making them ideal for use with the Bio-Rad protein assay, the DC protein assay, and the RC DC protein assay. The cuvettes adsorb less Coomassie blue dye than glass cuvettes and much less than quartz cuvettes. Assays can be mixed directly in the cuvette and the volume of reagents can be cut in half, yielding twice as many assays per kit.

Bio-Rad's standard disposable polystyrene cuvette holds up to 3.5 ml, allowing assays to be mixed directly in the cuvette. The 1.5 ml semimicrovolume disposable polystyrene cuvette is ideal for working with smaller volumes.

Both standard and semimicrovolume cuvettes are sized to fit most spectrophotometers. The cuvettes have smooth optical surfaces for consistent and accurate readings and the nonoptical walls are grooved for an easy grip and to provide orientation.

Energy Levels 80% T at 800 nm
55% T at 340 nm
Transmission matching ±1%
Path length matching ±0.5%
Path length 1 cm
Material Premium-grade virgin polystyrene
Dimensions 12.5 mm square x 45 mm high
Capacity  
Standard 3.5 ml
Semi-micro 1.5 ml
Semimicrovolume Disposable Polystyrene Cuvettes

223-9955
Pkg of 100, 1.5 ml cuvette

List Price:   $17.00
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Standard Disposable Polystyrene Cuvettes

223-9950
Pkg of 100, 3.5 ml cuvette

List Price:   $17.00
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Number Description Options
9197 Instruction Manual, Disposable Cuvettes — Visible Range, 800–340 nm Standard and Semi-Micro, for Use With Bio-Rad Protein Assay, Rev C Click to download