Tantalum Plasma Emission Standard 1 ml = 10 mg Ta Anthracenes 50% CHROMATOGRAPHIC PURITY TO PASS

50% CHROMATOGRAPHIC PURITY TO PASS TEST ELEMENTAL IMPURITIES AS REPORTED IDENTIFICATION TO PASS TEST EXPIRATION DATE DATE OF MANUFACTURE APPEARANCE RESIDUAL SOLVENTS TO PASS TEST

Test Specification Min Max ASSAY: STEARIC ACID(C[@18@]H[@36@]O[@2@]) 90% 90% ASSAY: STEARIC ACID & PALMITIC ACID 96% 96% CONGEALING TEMPERATURE 66 - 69 C 66 - 69 C ACID VALUE 195 - 200 195 - 200 IODINE VALUE 1

0% ARSENIC (As) 3 mg/kg FLUORIDE 25 mg/kg LEAD (Pb) 2 mg/kg IDENTIFICATION TO PASS TEST RETEST DATE

Test Specification Min Max APPEARANCE WHITE LYOPHILIZE WHITE LYOPHILIZE ASSAY 95% 95%

Test Specification Min Max ASSAY 99% COLOR (APHA) 10 ACIDITY (as CH[@3@]COOH) 100 ppm PEROXIDE 5 ppm WATER 150 ppm

Tantalum Plasma Emission Standard 1 ml = 10 mg Ta Anthracenes 50% CHROMATOGRAPHIC PURITY TO PASS