1 Calcium acetate monohydrate, ACS reagent 446355000 500 2 Acetonitrile, Optima LC/MS grade A955-1 1LT ¨ 3 L-Ascorbic acid, 99.7+%, for analysis, meets the specification of Ph. Eur. A/8882/48 100 ¨ 4 Hydrochloric acid, 37%, for analysis, d=1.18 H/1200/PB15 1LT¨ 5 Hydrofluoric acid, for trace metal analysis A513-P500 500 6 Perchloric acid, 70%, for analysis P/1280/PB15 1LT ¨ 7 Sulfamic acid, for analysis S/8641/53 500¨ 8 Sulfuric acid, min 95%, for analysis, d=1.83 S/9240/PB15 1LT ¨ 9 Thioglycolic acid, extra pure, SLR T/1000/PB05 100 ¨ 10 Aluminium nitrate nonahydrate, 98+%, extra pure, SLR A/2200/60 1KG ¨ 11 Silver nitrate, for analysis S/1280/46 25G ¨ 12 Cerium(III) nitrate hexahydrate, 99.5% 218691000 100 ¨ 13 Mercury(II) nitrate monohydrate, 98+% 213140500 50G ¨ 14 Boric acid, for analysis B/3800/53 500 ¨ 15 Iron(III) chloride anhydrous, extra pure, SLR I/1035/50 250 4 ¨ 16 Eriochrome blue-black R, pure, C.I. 15705, Metal indicator E/0200/46 25G ¨ 17 Sodium fluoride, 98+%, extra pure, SLR S/3880/50 250¨ 18 Potassium hydroxide, for analysis, pellets, meets the specification of BP + Ph. Eur. P/5640/53 500 ¨ 19 Hydrofluoric acid, 40%, for analysis H/1400/15 1LT ¨ 20 Potassium iodide, for analysis P/5880/48 100 ¨ 21 Iron(III) nitrate nonahydrate, for analysis I/1075/50 250 ¨ 22 Magnesium nitrate hexahydrate, for analysis, 99.0-101.0% M/0752/53 500 ¨ 23 Sodium metabisulfite, extra pure, SLR, meets the specification of BP + Ph. Eur. S/5240/53 500¨ 24 Lithium metaborate,