DL-Tryptophan Buffers 5 % ANGULAR ROTATION +94

5 % ANGULAR ROTATION +94 to +99 +94 to +99 REFRACTIVE INDEX @ 20[dC 1

Test Specification Min Max MICROBIAL LIMITS: ESCHERICHIA COLI NEGATIVE SALMONELLA NEGATIVE RETEST DATE

& RELATED ELEMENTS TO PASS TEST TO PASS TEST ARSENIC (As) 2 ppm ELEMENTAL IMPURITIES AS REPORTED AS REPORTED IRON (Fe) 10 ppm CLARITY AND COLOUR OF SOLUTION TO PASS TEST TO PASS TEST REDUCING SUBSTANCES TO PASS TEST TO PASS TEST IDENTIFICATION TO PASS TEST TO PASS TEST CERTIFIED HALAL EXPIRATION DATE MANUFACTURE DATE APPEARANCE RESIDUAL SOLVENTS TO PASS TEST TO PASS TEST

1N NaOH) 572 576 nm VISUAL TRANSITION INTERVAL pH 4

Test Specification Min Max ASSAY (DRIED BASIS) 98% WATER 10%

DL-Tryptophan Buffers 5 % ANGULAR ROTATION +94