Reference Materials and Proficiency Testing

Merck’s portfolio of over 20,000 products includes standards for environmental, petrochemical, pharmaceutical, clinical diagnostic and toxicology, forensic, food and beverage, cannabis, GMO standards, cosmetics, veterinary, and much more, as well as OEM and custom products and services. All standards manufacturing sites are at a minimum double accredited to ISO 17034 and ISO/IEC 17025 which is the highest achievable quality level for reference material producers.

Merck’s proficiency testing (PT) or interlaboratory comparison testing is a critical tool not only for ISO/IEC 17025 laboratories, but also for quality assurance and continuous improvement as it allows laboratories to validate their analytical performance of specific tests, measurements, or calibrations.

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