A Secret Weapon For principle of limit test of lead
(For your resolve of lead in iron salts use 10 ml of ammonium citrate Answer). Insert two drops of phenol red solution and make the solution just alkaline (crimson in coloration) because of the addition of sturdy ammonia Answer. Cool the solution if required and include 2 ml of potassium cyanide Answer.Residual solvent limit test: This test is util