Analysis Note

1000 mg/L N as NH⁴⁺ in water, prepared with high purity NH₄Cl and water

General description

This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to SI unit kg and measured against primary material from an NMI, e.g. NIST. Certified content incl. uncertainty and expiry date are given on the label. Download your certificate at: http://www.sigma-aldrich.com.

Legal Information

TraceCERT is a registered trademark of Sigma-Aldrich Co. LLC

Linkage

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