Merck Potassium hydrogen tartrate certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S) = 3.63 / pH(S) = 3.55 (25°C) Certipur®

Merck Water Standard Oven 1% Certified Reference Material for Karl Fischer oven technique Aquastar®

0.5 mol/l 1000 mg/L Pd
500 ml/paket

Merck Potassium chloride solution (nominal 0.147 mS/cm) certified reference material for the measurement of electrolytic conductivity (c=0. 001 mol/l) Certipur®

Merck Selenium standard solution traceable to SRM from NIST SeO in HNO 0.5 mol/l 1000 mg/l Se Certipur®

Merck Strontium standard solution traceable to SRM from NIST Sr(NO ) in HNO 0.5 mol/l 1000 mg/l Sr Certipur®

1000 mg/L CrO₄
500 ml/paket

Merck Sodium standard solution traceable to SRM from NIST NaNO in HNO 0.5 mol/l 1000 mg/l Na Certipur®

Merck Dysprosium ICP standard traceable to SRM from NIST Dy O in HNO 2-3% 1000 mg/l Dy Certipur®

H₂O 'da 0.200 mg/L F 
100 ml/paket

2 mol/l 1000 mg/L Au 
500 ml/paket

Merck Magnesium ICP standard traceable to SRM from NIST Mg(NO ) in HNO 2-3% 1000 mg/l Mg Certipur®

Merck Lactose Standard 5 % Certified Reference Material for Karl Fischer Titration Aquastar®