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Specifications Analysis Note 1000 mg/L Cr in 2% nitric acid, prepared with high purity Cr(NO3)3 x 9H2O, HNO3 TraceSELECT® and water TraceSELECT®Ultra.General '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. Information about trace impurities are stated in the enclosed certificate.Legal Information TraceCERT is a registered trademark of Sigma-Aldrich Co. LLC TraceSELECT is a registered trademark of Sigma-Aldrich Co. LLCGrade: TraceCERT®Shelf Life: (limited shelf life, expiry date on the label)Composition: prepared with Cr(NO3)3 x 9H2OConcentration: 1000 mg/L Cr in nitric acid
