Certified Reference Materials (CRMs)

We offer a wide selection of CRMs to help the laboratory analyst achieve superior analytical results.

Certified Reference Materials and Accreditation:
Analytical measurements depend on many variables to provide the credible data needed to make informed decisions. The quality of this data is only as good as the reference material used to calibrate the measurement device. High quality reference materials are available only from organizations with a robust quality system. Accreditation to ISO/IEC 17025 and ISO Guide 34, also called Double Accreditation, represents the pinnacle of quality system achievement and allows the credible production and testing of Certified Reference Materials (CRMs).
Sigma-Aldrich has four Double Accredited sites producing CRMs: Fluka (Buchs, Switzerland); Supelco (Bellefone, PA, USA); RTC (Laramie, WY, USA); and Cerilliant (Round Rock, TX, USA).

Note - Beginning June 15, 2015, customers will see a change in the accreditation symbols found on the Certificate of Analysis (COA) for Certified Reference Materials (CRMs)and Proficiency Testing samples (PTs) sold under Sigma-Aldrich US based CRM producers. The ACLASS accreditation symbol is being replaced with the new ANAB brand symbol. This change reflects the decision by the ANSI-ASQ National Board of Accreditation, of which ACLASS is a part, to unify all of their internal brandings under a single brand. This change has no impact on the accreditation status for ISO/IEC 17025, ISO Guide 34 and ISO 17043 as it relates to US facilities. Since there is a phase in period, customers may see COAs with either symbol over the next two to three years.