Biuret 100g - clarify to customers that this is not the biuret reagent - see description below.
22844-100g

Biuret is  a chemical compound ( it is NOT the  Biuret reagent) with the chemical formula [H₂NC(O)]₂NH.  It is a white solid that is soluble in hot  water. 

The biuret test is a chemical test for proteins and polypeptides. For the biuret reagent see instructions to make below .The test is  based on the biuret reagent, a blue solution that turns violet upon contact with proteins, or any  substance with peptide bonds. The test and reagent do not actually contain biuret; they  are so named because both biuret and proteins have the same response to the  test.

Biuret  reagent to make:
1.Dissolve 1.5 g co pper (11) sulp hate, 6 g potass ium so dium  tar trate in 500 ml dist.water.
2.Add 375 ml of a 2M sod ium hyd roxide  while stirring
3.Make up to 1L
advice given with no  guarantee