Merck Buffer solution (Potassium tetraoxalate) traceable to SRM from NIST and PTB pH 1.68 (25°C) Certipur®

2 mol/l 1000 mg/L Hg
100 ml/paket

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

Amonyum, klorür, COD, nitrat, fosfat, sülfat fotometrik metodların kalite kontrolleri için Spectroquant®
1 adet/paket

0.5 mol/l 1000 mg/L Cd 
100 ml/paket

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

Merck Potassium dichromate volumetric standard, secondary reference material for redox titrati on, traceable to NIST SRM Certipur® Reag. USP

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

H₂O 'da 200 mg/L TOC 
100 ml/paket

Merck Buffer solution (di-sodium hydrogen phosphate/potassium dihydrogen phosphate), colour: green traceable to SRM from NIST and PTB pH 7.00 (20°C) Certipur®

Merck Tellurium standard solution traceable to SRM from NIST H TeO in HNO 0.5 mol/l 1000 mg/l Te Certipur®

Merck di-Sodium tetraborate decahydrate certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S)=9.18 (25°C) Certipur®

Merck Buffer solution (di-sodium tetraborate) traceable to SRM from NIST and PTB pH 9.18 (25°C) Certipur®