Phosphotungstic Acid Crystal Reagent TEMPOs 10% ELEMENTAL IMPURITIES AS REPORTED

10% ELEMENTAL IMPURITIES AS REPORTED ORGANIC IMPURITIES TO PASS TEST IDENTIFICATION TO PASS TEST RETEST DATE DATE OF MANUFACTURE APPEARANCE RESIDUAL SOLVENTS TO PASS TEST

Test Specification Min Max ASSAY 98% RETEST DATE

00% MELTING POINT 75

Test Specification Min Max SODIUM (Na) 995 - 1005 ppm 995 - 1005 ppm STANDARDIZED AGAINST NIST 3152 3152 EXPIRATION DATE

50% BACTERIAL ENDOTOXINS TO PASS TEST TO PASS TEST IDENTIFICATION TO PASS TEST TO PASS TEST EXPIRATION DATE

Phosphotungstic Acid Crystal Reagent TEMPOs 10% ELEMENTAL IMPURITIES AS REPORTEDTest Specification Min Max AMMONIUM (NH[@4@]) 0. 02% CHLORIDE (Cl) 0. 03% HEAVY METALS (as Pb) 0. 01% INSOLUBLE MATTER 0. 02% IRON (Fe) 0. 00% NITRATE (NO[@3@]) 0. 01% SULFATES (SO[@4@]) 0. 02%