Cayman Chemical products containing Certified Reference Material (CRM) in the name are highly qualified materials manufactured and tested to meet ISO/IEC 17025:2005 and ISO Guide34:2009 international guidelines for reference materials. These materials are tested using validated analytical methods on qualified instrumentation to ensure traceability to SI units of measure. Cayman’s CRMs are tested for Homogeneity and Stability and are provided with a certificate stating the CRM property value(s) along with the combined uncertainty of the property value(s). These materials are intended for quantitative applications where quantitative accuracy and uncertainty are critical. Cayman Chemical is committed to providing quality products to its customers as evidenced by its accreditation to the ISO/IEC 17025:2005 and ISO Guide 34:2009 standards. For copies of accreditation certificates or more information on Cayman’s CRM product line, please visit our website or contact your local sales representative.