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 SODIUM (Na) 995 - 1005 ppm 995 - 1005 ppm STANDARDIZED AGAINST NIST 3152 3152 EXPIRATION DATE

Test Specification Min Max MOLYBDENUM (Mo) 9950 - 10050 ppm 9950 - 10050 ppm EXPIRATION DATE

Test Specification Min Max ASSAY 98% RETEST DATE

000 ug TYPICAL 2

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%