Merck Europium ICP standard traceable to SRM from NIST Eu O in HNO 2-3% 1000 mg/l Eu Certipur®
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Merck Sulfur ICP standard traceable to SRM from NIST H SO in H O 1000 mg/l S Certipur®
Merck Germanium ICP standard traceable to SRM from NIST (NH ) GeF in H O 1000 mg/l Ge Certipur®
Merck Potassium chloride solution (nominal 111 mS/cm) certified reference material for the measurement of electrolytic conductivity (c=1. 0 mol/l) Certipur®
Merck Buffer solution (citric acid/sodium hydroxide), traceable to SRM from NIST and PTB pH 6.00 (20°C) Certipur®
Merck Praseodymium ICP standard traceable to SRM from NIST Pr(NO ) in HNO 2- 3% 1000 mg/l Pr Certipur®