GC Secondary Reference Standards

Primary and Secondary Reference Standards are very important for determining the purity of the chemicals.

Primary reference standards are obtained from EP, USP, BP, JP, and FP. Also, they are quite expensive. On the other hand, secondary reference standards are substances which are prepared by comparison with a primary reference substance.

Secondary reference standards are used for the calibration of control materials, which are used for analyzing unknown concentrations of substances. To apply the secondary standard to the primary standard, it must be standardized and compared.


Chemicals and reagents classified as secondary standards have certain properties, for instance;

  1. It is comparable in purity to the primary standard
  2. Stability and responsiveness are equivalent to the primary standards
  3. It remains stable for a longer time.

Pharmacopeia traceable - product offerings:

  • API, Excipients, Vitamins, Amino Acids
  • Residual solvents (USP traceable)
  • Other solvents- individual standards (Secondary and Working)
  • Melting point standards
  • Impurities standards
  • Other Working standards