Biuret reagent.
bium 1L

Biuret reagent.

1.    Dissolve 1.5 g co pper (11) sulf ate, 6 g pota ssium so dium ta rtrate-4-wa ter in 500 ml of distilled wa ter.

2.    Add 375 ml of a 2M sodi um hydro xide solution while stirring. ...

3.    Pour this mixture into a 1000 ml volumetric flask and dilute to 1 litre.

4.    Mix well.