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Co-validation of Porcine Insulin CRM

This study was carried out under the framework of the Asian Collaboration on Certified Reference Materials (ACRM) and was piloted by NIM for reference material and method. Co-validation of porcine insulin certified reference material was performed to check the certified value assigned by National Institute of Metrology, P.R. China. The certified value was assigned by an average of isotope dilution mass spectrometry (IDMS) with national amino acid CRMs as standards, as well as the one from purity deduction method. KRISS and NMIJ participated to co-validate the certified value by IDMS. Good agreement was observed among the reported results of NIM, KRISS and NMIJ.