Cayman Chemical products containing Reference Material (RM) 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 RMs are tested for Homogeneity and Stability however, a combined uncertainty is not included with these materials. These materials are intended for qualitative applications where traceability of product identity is 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 RM product line, please visit our website or contact your local sales representative.