Limit test for Heavy Metals

Limit test for Heavy Metals Principle Limit test of heavy metals is based on the reaction of metallic impurities with hydrogen sulfide in acidic medium to form brownish color solution. Metals that response to this test are lead, mercury, bismuth, arsenic, antimony, tin, cadmium, silver, copper, and molybdenum. The metallic impurities in substances are expressed … Read more

Impurities- It’s sources, Types and Test of Purity.

Impurities Impurities in pharmaceutical substances are the unwanted chemical substances in the active pharmaceutical ingredient (API) or developed during formulation or upon ageing of both API and formulation. In simple words, any component that is not a formulation ingredient is known as impurity. The presence of these impurities affects the safety and efficacy of the … Read more