Description General description This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis. Application Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support. Specifications View example COA for CRM308 Note - The link provided is an example certificate of analysis (COA) only and may not be the lot that you receive. All analytes may not be present or certified for each lot, and analyte concentrations will vary by lot. Other Notes Values of analytes vary lot to lot. Some lots may not contain all analytes.