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Merck Buffer Solution (citric acid, sodium hydroxide, hydrogen chloride) traceable to SRM from NIST and PTB pH 2.00 (25°C) Certipur®
Merck Buffer solution (potassium dihydrogen phosphate/disodium hydrogen phosphate) traceable to SRM from NIST and PTB pH 7.00 (25°C) Certipur®
Merck Thulium ICP standard traceable to SRM from NIST Tm(NO ) in HNO 2-3% 1000 mg/l Tm Certipur®
Merck Potassium chloride solution (nominal 12.8 mS/cm) certified reference material for the measurement of electrolytic conductivity (c=0. 1 mol/l) Certipur®
Merck Iron(II) ethylenediammonium sulfate Volumetric standard, secondary reference material for redox titration, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. Ph Eur
Merck Buffer solution (citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 3.00 (25°C) Certipur®
Merck Copper ICP standard traceable to SRM from NIST Cu(NO ) in HNO 2-3% 10000 mg/l Cu Certipur®
Merck Scandium standard solution traceable to SRM from NIST Sc O in HNO 1 mol/l 1000 mg/l Sc Certipur®
Merck Titanium ICP standard traceable to SRM from NIST (NH ) TiF in H O 1000 mg/l Ti Certi pur®