L-Cysteine size:1 KG Test Specification Min Max ZINC

Test Specification Min Max ZINC (Zn) 15% LEAD (Pb) 10 ppm ARSENIC (As) 3 ppm CADMIUM (Cd) 5 ppm RETEST DATE

Test Specification Min Max ZIRCONIUM (ZR) 995 - 1005 ppm 995 - 1005 ppm STANDARDIZED AGAINST NIST 3169 3169 EXPIRATION DATE

C[@12@]H[@22@]O[@2@]) 5

10% ELEMENTAL IMPURITIES AS REPORTED AS REPORTED IDENTIFICATION (A) SPECTRUM SPECTRUM IDENTIFICATION (B) POSITIVE POSITIVE EXPIRATION DATE DATE OF MANUFACTURE APPEARANCE RESIDUAL SOLVENTS AS REPORTED

Test Specification Min Max WEIGHT AVERAGE MOLECULAR WEIGHT 35

L-Cysteine size:1 KG Test Specification Min Max ZINCTest Specification Min Max ASSAY (C[@3@]H[@7@]NO[@2@]S) 98 102. 00% SPECIFIC ROTATION, [a] (C=8; 1N HCl) +7. 0 to +9. 0 +7. 0 to +9. 0 TRANSMITTANCE 95% AMMONIUM (NH[@4@]) 0. 02% ARSENIC (As) 0. 00% CHLORIDE (Cl) 0. 05% HEAVY METALS (as Pb) 0. 00% IRON (Fe) 0. 00% LOSS ON DRYING 0. 50% RESIDUE AFTER IGNITION 0. 20% SULFATES (SO[@4@]) 0. 03% EXPIRATION DATE DATE OF MANUFACTURE APPEARANCE