Ammonium Chloride-Ammonium Hydroxide Buffer Solution pH 10.0 +/- 0.1 For Water Hardness APHA Succinimides & Phthalimides 00% TOTAL IMPURITIES 5

00% TOTAL IMPURITIES 5

8 LOSS ON DRYING (OVER SILICA) 0

/td> RESIDUE AFTER EVAPORATION 0

Test Specification Min Max THORIUM 995 - 1005 ppm 995 - 1005 ppm STANDARDIZED AGAINST NIST 3159 3159 EXPIRATION DATE

Ammonium Chloride-Ammonium Hydroxide Buffer Solution pH 10.0 +/- 0.1 For Water Hardness APHA Succinimides & Phthalimides 00% TOTAL IMPURITIES 5Test Specification Min Max pH @ 25[dC 10 + 0. 1 10 + 0. 1 pH @ 25[dC 10 + 0. 1 10 + 0. 1 pH @ 25[dC 10 + 0. 1 10 + 0. 1 pH @ 25[dC 10 + 0. 1 10 + 0. 1 TRACEABLE TO NIST TRACEABLE TO NIST TRACEABLE TO NIST TRACEABLE TO NIST EXPIRATION DATE EXPIRATION DATE EXPIRATION DATE EXPIRATION DATE