General description: This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO Guide 34. This CRM is traceable to NIST SRM.
Certified content incl. uncertainty and expiry date are given on label.
Download your certificate at: http://www.sigma-aldrich.com.
Analysis Note: 1000 mg/L K in water, prepared with high purity KNO3 and water TraceSELECT®Ultra.
Legal Information: TraceCERT is a registered trademark of Sigma-Aldrich Co. LLC
Concentration: 1000 mg/L K+ in H2O
Grade: TraceCERT®