Cobalt Atomic Absorption Standard Acetylenic Hydrocarbons 5 % pH OF A

5 % pH OF A 5% SOLUTION @ 25[dC APPROX

0 @ 20 STERILITY To pass test To pass test CONDUCTIVITY Meets USP requir Meets USP requir TOTAL ORGANIC CARBON As reported As reported DNase

50% INSOLUBLE IN DILUTE H[@2@]SO[@4@] 0

0 % CHROMATOGRAPHIC PURITY TO PASS TEST TO PASS TEST LOSS ON DRYING 1

99 % LITHIUM 2000 ppm SODIUM (Na) 2000 ppm POTASSIUM (K) 2000 ppm CESIUM 2000 ppm MAGNESIUM (Mg) 10 ppm CALCIUM (Ca) 50 ppm BARIUM 100 ppm ALUMINUM 5 ppm IRON (Fe) 5 ppm CHROMIUM (Cr) 1 ppm

Cobalt Atomic Absorption Standard Acetylenic Hydrocarbons 5 % pH OF ATest Specification Min Max COBALT (Co) 995 1005 ppm 995 1005 ppm STANDARDIZED AGAINST NIST 3113 3113 EXPIRATION DATE