7-(23-Dihydroxypropyl)theophylline HPLC Ion-Pair Reagents for Acidic Samples 50% SPECIFIC GRAVITY @ 25[dC

50% SPECIFIC GRAVITY @ 25[dC 1

Test Specification Min Max ASSAY (w/w) 99% ALUMINUM 50 ppt ANTIMONY (Sb) 50 ppt ARSENIC (As) 50 ppt BARIUM (Ba) 10 ppt BERYLLIUM (BE) 10 ppt BISMUTH 10 ppt CADMIUM (Cd) 10 ppt CALCIUM (Ca) 50 ppt CERIUM 10 ppt CESIUM 10 ppt CHROMIUM (Cr) 10 ppt COBALT (Co) 10 ppt COPPER (Cu) 50 ppt DYSPROSIUM 1 ppt ERBIUM 1 ppt EUROPIUM 1 ppt GADOLINIUM 1 ppt GALLIUM (Ga) 10 ppt GERMANIUM 10 ppt HAFNIUM 10 ppt HOLMIUM 1 ppt INDIUM 1 ppt IRON (Fe) 50 ppt LANTHANUM 1 ppt LEAD (Pb) 10 ppt LITHIUM 10 ppt LUTETIUM 10 ppt MAGNESIUM (Mg) 50 ppt MANGANESE (Mn) 10 ppt MOLYBDENUM (Mo) 10 ppt NEODYMIUM 1 ppt NICKEL (Ni) 50 ppt PLATINUM 50 ppt POTASSIUM (K) 50 ppt PRASEODYMIUM 1 ppt RHENIUM 10 ppt RHODIUM (Rh) 50 ppt RUBIDIUM (Rb) 10 ppt RUTHENIUM 50 ppt SAMARIUM 1 ppt SCANDIUM 10 ppt SELENIUM (Se) AS REPORTED AS REPORTED SILVER (Ag) 50 ppt SODIUM (Na) 100 ppt STRONTIUM (Sr) 10 ppt TELLURIUM 1 ppt TERBIUM 1 ppt THALLIUM (Tl) 10 ppt THORIUM 1 ppt THULIUM 1 ppt TIN (Sn) 50 ppt TITANIUM (Ti) 10 ppt TUNGSTEN 10 ppt URANIUM 1 ppt VANADIUM (V) 10 ppt YTTERBIUM 1 ppt YTTRIUM 1 ppt ZINC (Zn) 50 ppt ZIRCONIUM (ZR) 10 ppt EXPIRATION DATE

2 (pink) to pH 4

95 % RETEST DATE

GC-ECD(AS HEPTACHLOR EPOXIDE) 10 ppt RESIDUE AFTER EVAPORATION 2 ppm WATER 0

7-(23-Dihydroxypropyl)theophylline HPLC Ion-Pair Reagents for Acidic Samples 50% SPECIFIC GRAVITY @ 25[dC