Merck Buffer solution (boric acid/potassium chloride/sodium hydroxide) colour coded: blue, trac eable to NIST and PTB pH 10.00 (25°C) Certipur®

Merck Calcium carbonate volumetric standard, secondary reference material for complexometr y, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. USP

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

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

Merck Buffer solution (citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 2.00 (25°C) Certipur®

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

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

Merck Water standard 1% Certified Reference Material for Karl Fischer Titration 1 g 10 mg H O Aquastar®

Merck Buffer solution (glycine/sodium chloride/hydrogen chloride), traceable to SRM from NIST and PTB pH 1.00 (20°C) Certipur®

Merck Thallium ICP standard traceable to SRM from NIST TlNO in HNO 2-3% 1000 mg/l Tl Certipur®

H₂O 'da 200 mg/L COD

Merck Zirconium standard solution traceable to SRM from NIST ZrCl in HCl 2 mol/l 1000 mg/l Zr Certipur®

Merck Thorium ICP standard traceable to SRM from NIST Th(NO ) in HNO 2-3% 10 mg/l Th Certipur®