Biuret Reagent Solution, 125mL (4 oz.) For Sale

Biuret Reagent is an aqueous potassium sodium tartrate solution that has been treated with cupric sulphate and sodium hydroxide. This blue solution will become pink-purple when peptide bonds (protein) are present. Comes packaged in an HDPE squeeze container with a PP flip-top cap for drop-by-drop dispensing.
Protein Test – Biuret solution
Add 40 droplets of the test liquid to a test tube.
If conducting multiple liquid tests, designate each test tube with a marker.
Add three droplets of the Biuret reagent to each test tube. Shake lightly to combine.
Note any colour alterations. Proteins cause a solution to colour pink or purple.