Merck 109437 Buffer solution (citric acid/sodium hydroxide), traceable to SRM from NIST and PTB pH 6.00 (20°C) Certipur 1 Lt

Merck 119806 Zinc standard solution traceable to SRM from NIST Zn(NO₃)₂ in HNO₃ 0.5 mol/l 1000 mg/l Zn Certipur®

Merck 109436 Buffer solution (citric acid/sodium hydroxide) traceable to SRM from NIST and PTB pH 5.00 (20°C) Certipur®

Merck 119533 Cyanide standard solution traceable to SRM from NIST K₂[Zn(CN)₄] in H₂O 1000 mg/l CN Certipur®

Merck 109439 Buffer solution (di-sodium hydrogen phosphate/potassium dihydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (20°C) Certipur®

Merck 199002 Buffer solution (potassium dihydrogen phosphate/di-sodium hydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (25°C) Certipur®

Merck 119785 Cobalt standard solution traceable to SRM from NIST Co(NO₃)₂ in HNO₃ 0.5 mol/l 1000 mg/l Co Certipur®

Synonyms: Nota 1 A

Merck 119796 Selenium standard solution traceable to SRM from NIST SeO₂ in HNO₃ 0.5 mol/l 1000 mg/l Se Certipur®

Synonyms: Selenium standard for aqueous matrices ready foruse

Merck 119899 Nitrite standard solution traceable to SRM from NIST NaNO₂ in H₂O 1000 mg/l NO₂ Certipur®

Synonyms: Nitrite standard for aqueous matrices ready foruse

Merck 170223 Lithium standard solution traceable to SRM from NIST LiNO₃ in HNO₃ 0.5 mol/l 1000 mg/l Li Certipur®

Merck 170309 Cadmium ICP standard traceable to SRM from NIST Cd(NO₃)₂ in HNO₃ 2-3% 1000 mg/l Cd Certipur®

Merck 170333 Mercury ICP standard traceable to SRM from NIST Hg(NO₃)₂ in HNO₃ 10% 1000 mg/l Hg Certipur®

Merck 119779 Chromium standard solution traceable to SRM from NIST Cr(NO₃)₃ in HNO₃ 0.5 mol/l 1000 mg/l Cr Certipur®

Merck 109477 Buffer solution (di-sodium hydrogen phosphate/potassium dihydrogen phosphate), colour: green traceable to SRM from NIST and PTB pH 7.00 (20°C) Certipur®

Merck 119897 Chloride standard solution traceable to SRM from NIST NaCl in H₂O 1000 mg/l Cl Certipur®

Synonyms: Chloride standard for aqueous matrices ready foruse

Merck 109438 Buffer solution (boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 10.00 (20°C) Certipur®

Merck 119781 Iron standard solution traceable to SRM from NIST Fe(NO₃)₃ in HNO₃ 0.5 mol/l 1000 mg/l Fe Certipur®