Merck 109892 Buffer concentrate (phosphate/sodium hydroxide) pH 12.00 ± 0.05 (20°C) Titrisol

Merck 170350 Selenium ICP standard traceable to SRM from NIST SeO₂ in HNO₃ 2-3% 1000 mg/l Se Certipur®

Merck 170302 Antimony ICP standard traceable to SRM from NIST Sb₂O₃ in HCl 7% 1000 mg/l Sb Certipur®

Synonyms: Nota 1 A

Merck 119814 Fluoride standard solution traceable to SRM from NIST NaF in H₂O 1000 mg/l F Certipur®

Synonyms: Fluoride standard for aquecous matrices ready for use

Merck 109462 Buffer solution (boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 11.00 (20°C) Certipur®

Merck 170230 Potassium standard solution traceable to SRM from NIST KNO₃ in HNO₃ 0.5 mol/l 1000 mg/l K Certipur®

Merck 119813 Sulfate standard solution traceable to SRM from NIST Na₂SO₄ in H₂O 1000 mg/l SO₄ Certipur®

Synonyms: Sulfate standard for aqueous matrices ready for use

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

Merck 170314 Copper ICP standard traceable to SRM from NIST Cu(NO₃)₂ in HNO₃ 2-3% 1000 mg/l Cu Certipur®

Merck 170353 Sodium ICP standard traceable to SRM from NIST NaNO₃ in HNO₃ 2-3% 1000 mg/l Na Certipur®

Merck 101203 Potassium chloride solution (nominal 1.41 mS/cm) certified reference material for the measurement of electrolytic conductivity (c=0.01 mol/l) Certipur®

Merck 170238 Sodium standard solution traceable to SRM from NIST NaNO₃ in HNO₃ 0.5 mol/l 1000 mg/l Na Certipur®

Merck 109987 Copper standard 1000 mg Cu, (CuCl₂ in H₂O) Titrisol®

Merck 170204 Antimony standard solution traceable to SRM from NIST Sb₂O₃ in HCl 2 mol/l 1000 mg/l Sb Certipur®

Synonyms: Nota 1 A

Merck 119773 Arsenic standard solution traceable to SRM from NIST H₃AsO₄ in HNO₃ 0.5 mol/l 1000 mg/l As Certipur®

Merck 119777 Cadmium standard solution traceable to SRM from NIST Cd(NO₃)₂ in HNO₃ 0.5 mol/l 1000 mg/l Cd Certipur®

Merck 170355 Sulfur ICP standard traceable to SRM from NIST H₂SO₄ in H₂O 1000 mg/l S Certipur®