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.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Download your certificate at https://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Sulfur Standard can be used as a calibration standard in the direct determination of total sulfur in wine by continuum-source atomic-absorption spectrometry.

溶于水的 1000mg/L S 溶液，使用高纯度 H₂SO₄ 和 水制备。

For a complete product listing of our ICP and AAS range, including technical information and example certificates, please visit ICP & AAS standards website.

Detailed information on our complete workflow solutions for ICP-AAS can be found in our Brochure: High-Purity Chemicals for Inorganic Trace Analysis.

In our effort to be more sustainable, we′re going digital with COAs-download them directly from our website.

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