This standard is intended primarily for use in validating methods for determine ascorbic acid in human serum and similar matrices. It can also be used for quality assurance when assigning values to in-house control material. Aunit consists of four ampules

This standard is intended for use in validating methods for determinating fat-soluble vitamins, carotenoids and cholesterol in human serum and plasma. It can also be used for quality assurance when assigning values to in-house control material for these c