This certified reference material (CRM) is produced in accordance with ISO 17034 and characterized in accordance with ISO/IEC 17025. This CRM is traceable to SI unit kg and measured against primary material from a National Metrology Institute (NMI), e.g. NIST.

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Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty, date of expiry, and detailed information about trace impurities.

Copper standard for ICP has been used as a standard in the determination of heavy metal content in samples of oil and raw materials extracted from fish using inductively coupled plasma optical emission spectrometry (ICP-OES).

1 g/L Cu in 2% nitric acid, prepared with high purity Cu metal, HNO₃, and water

For a complete product listing of our TraceCERT^® range of CRMs for ICP and AAS, technical information and example certificates, please visit our ICP & AAS standards website

TraceCERT is a registered trademark of Merck KGaA, Darmstadt, Germany