COD (KOİ) standart çözeltisi CRM

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

Merck Buffer solution (boric acid/potassium chloride/sodium hydroxide) traceable to SRM from NIST and PTB pH 10.00 (25°C) Certipur®

 H₂O 'da 2000 mg/L COD
100 ml/paket

2 mol/l 1000 mg/L Sb
500 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®

H₂O 'da 200 mg/L NO₃-N
100 ml/paket

H₂O 'da 50.0 mg/l NH₄-N
100 ml/paket

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

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

Merck Chromium ICP standard traceable to SRM from NIST Cr(NO ) in HNO 2-3% 10000 mg/l Cr Certipur®

Merck Buffer solution (boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 9.00 (20°C) Certipur®

Merck Sodium chloride volumetric standard, secondary reference material for argentometry, tra ceable to NIST SRM Certipur® Reag. Ph Eur,Reag.USP