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 certificate.
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Potassium standard has been used as a calibration standard to determine the concentration of potassium present in minced beef using atomic absorption spectrophotometry(AAS).
1000 mg/L K in 2% nitric acid, prepared with high purity KNO3, HNO3 and water
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