Test Specification Min Max ACTIVITY 125 U/mg 125 U/mg 1Unit liberate 1micromole of L-leucine equivalent from collagen in 5hr@37C pH7.5 RETEST DATE

Test Specification Min Max ASSAY 99% 99% pKa @ 20 C APPROX. 10.4 APPROX. 10.4 pH RANGE 9.7 - 11.1 9.7 - 11.1

Test Specification Min Max ASSAY 99% 99% pKa @ 25 C 9.3 - 9.7 9.3 - 9.7

Test Specification Min Max ASSAY (CuSO[@4@][-5H[@2@]O) 98.0 - 102.0 % 98.0 - 102.0 % INSOLUBLE MATTER 0.01% CHLORIDE (Cl) 0.00% NITROGEN COMPOUNDS (as N) 0.00% IRON (Fe) 0.00% SODIUM (Na)...

Test Specification Min Max ASSAY (CHCl[@3@]) 99.80% COLOR (APHA) 10 RESIDUE AFTER EVAPORATION 0.00% ACETONE & ALDEHYDE(as ACETONE) TO PASS TEST(lim TO PASS TEST(lim ACID AND CHLORIDE TO PASS TEST...

Test Specification Min Max ASSAY 99.0 - 105.0 % 99.0 - 105.0 % pH OF A 5% SOLUTION @ 25[dC 4.5 - 8.5 4.5 - 8.5 INSOLUBLE MATTER 0.01% OXIDIZING...

Test Specification Min Max ASSAY 99.00% 99.00% INFRARED Matches Referenc Matches Referenc pH (1.0M SOLUTION) 9.5 - 11.0 ABSORBANCE (1M; H2O) @ 280 nm 0.4 CHLORIDE 0.01% RETEST DATE

Test Specification Min Max ASSAY (by GC) 99.50% COLOR (APHA) 20 ULTRAVIOLET ABSORBANCE (1 cm cell vs. water) TO PASS TEST TO PASS TEST RESIDUE AFTER IGNITION 10 ppm TITRABLE...

Test Specification Min Max ASSAY (by GC) 99.90% 99.90% APPEARANCE CLEAR CLEAR COLOR (APHA) 5 SOLUBILITY IN WATER TO PASS TEST TO PASS TEST ULTRAVIOLET ABSORBANCE (1 cm cell vs....

Test Specification Min Max ASSAY (by GC) 99.90% ULTRAVIOLET ABSORBANCE (1 cm cell vs. water) 255 nm 1 257 nm 0.5 260 nm 0.15 263 nm 0.1 270 nm 0.02...

Test Specification Min Max ASSAY (by GC) 99.90% 99.90% APPEARANCE CLEAR,CLRLESS.LI CLEAR,CLRLESS.LI COLOR (APHA) 10 ULTRAVIOLET ABSORBANCE (1 cm cell vs. water) TO PASS TEST TO PASS TEST RESIDUE AFTER...

Test Specification Min Max ASSAY 99.00%

Test Specification Min Max ASSAY 99% 99%

Test Specification Min Max ASSAY 99.00% - WATER 0.50% 0.50% SULFATED ASH 0.10% 0.10%

Test Specification Min Max ASSAY 98.5 - 101.5% 98.5 - 101.5% SPECIFIC ROTATION [a][@D@] +26.0??to +27.7 +26.0??to +27.7 LEAD (Pb) 10 ppm HEAVY METALS 20 ppm LOSS ON DRYING 1%...

Test Specification Min Max ABSORPTION MAX 618 nm 618 nm

Test Specification Min Max ASSAY (DRIED BASIS) 98.5 - 102.0% 98.5 - 102.0% SPECIFIC ROTATION (C=10; 6N HCl) +13.5??to +15.5 +13.5??to +15.5 HEAVY METALS (as Pb) 0.00% LEAD (Pb) 0.00%...

Test Specification Min Max GEL POINT APPROX. 36?? APPROX. 36?? GEL STRENGTH, 1.5% 1200 g/cm2 EEO 0.15 SULFATE (SO[@4@]) 0.35%

Test Specification Min Max APPEARANCE

Test Specification Min Max ACRYLAMIDE (w/v) 99.90% 99.90% BISACRYLAMIDE (w/v) 99.00% 99.00% EXPIRATION DATE

Test Specification Min Max ASSAY 98.00% INSOLUBLE MATTER 0.01% RESIDUE AFTER IGNITION 0.05% TITRABLE FREE ACID 0.04 meq/g CHLORIDE AND CHLORATE (as Cl) 0.00% HEAVY METALS (as Pb) 0.00% IRON...

Test Specification Min Max ASSAY (C[@6@]H[@8@]O[@6@]) 99.00% SPECIFIC ROTATION @25 C +20.5 to +21.5 +20.5 to +21.5 RESIDUE AFTER IGNITION 0.10% HEAVY METALS (as Pb) 0.00% IRON (Fe) 0.00%

Test Specification Min Max ASSAY (C[@5@]H[@9@]NO[@2@]; DRIED BASIS) 98.5 101.50% OPTICAL ROTATION, [a]D20 (DRIED BASIS) -84.0??to -86.3 -84.0??to -86.3 LEAD (Pb) 5 mg/kg LOSS ON DRYING 0.30% RESIDUE ON IGNITION...

Test Specification Min Max APPEARANCE