China NIL Research Center for Proficiency Testing takes great pleasure in informing you that we provide some international proficiency testing schemes in 2024, which are listed in the attachment. Furthermore, many perennial proficiency testing schemes will also be provided according to the requirement of internal and international laboratories.

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China NIL Research Center for Proficiency Testing takes great pleasure in informing you that we provide some international proficiency testing schemes in 2023, which are listed in the attachment. Furthermore, many perennial proficiency testing schemes will also be provided according to the requirement of internal and international laboratories.

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Entrusted by the Certification and Accreditation Administration of the People’s Republic of China (CNCA), China NIL organize, implement and coordinate the PT schemes “CNCA-22-I01 Determination of TFe, SiO2, P, S in iron ore" and " CNCA-22-I02 Determination of SiO2, CaO, MgO, Fe2O3, Al2O3 in limestone".

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