BIORAD Disposable cuvettes 1-3.5mL pack of 100

Made of polystyrene, they adsorb dyes much less than glass or quartz cuvettes.
The number of assays that can be performed with one bottle of stain or reagent is doubled, reducing the cost per assay.
In the Protein Assay Standard Method, the required amounts are 0.05 mL of sample and 2.5 mL of staining solution, and in the DC Protein Assay Standard Method, the required amounts are 0.05 mL of sample, 0.25 mL of Reagent A (or Reagent A'), and 2.0 mL of Reagent B. This allows the cuvette to be used in place of a test tube, eliminating the need to transfer samples from test tubes.