Merck Buffer solution (citric acid/sodium hydroxide/hydrogen chloride) colour: red traceable to SRM from NIST and PTB pH 4.00 (20 °C) Certipur®

Merck Titanium standard solution traceable to SRM from NIST (NH ) TiF in H O 1000 mg/l Ti Certipur®

H₂O 'da 8000 mg/L COD
100 ml/paket

Merck Buffer solution (Potassium dihydrogen phosphate, di-sodium hydrogen phophate) traceable to SRM from NIST and PTB pH 6.86 (25°C) Certipur®

0.5 mol/l 1000 mg/L Al 
100 ml/paket

H₂O 'da 5.0 mg/L TOC 
100 ml/paket

1000 mg/L F 
500 ml/paket

Merck Buffer solutions (boric acid/potassium chloride/sodium hydroxide), traceable to SRM fro m NIST and PTB pH 11.00 (25°C) Certipur®

Merck Lithium standard solution traceable to SRM from NIST LiNO in HNO 0.5 mol/l 1000 mg/l Li 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

0.5 mol/l 1000 mg/L Cr
100 ml/paket

H₂O 'da 1.00 mg/L Mn
100 ml/paket

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