Merck Buffer solution (boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 10.00 (20°C) Certipur®

Merck Buffer solution (di-sodium hydrogen phosphate/ potassium dihydrogen phosphate), colour:yellow traceable to SRM from NIST and PTB pH 7.00 (25°C) Certipur®

H₂O 'da 2.50 mg/L N
100 ml/paket

Merck Silicon standard solution traceable to SRM from NIST acidic, (NH ) SiF in H O 1000 mg/l Si Certipur®

Merck Calcium ICP Standard traceable to SRM from NIST Ca(NO ) in HNO 2-3% 1000 mg/l Ca Certipur®

H₂O 'da0.200 mg/L Al
100 ml/paket

Merck Potassium tetraoxalate dihydrate certified secondary standard reference material for pH measurement; directly traceable to primary reference material from NIST/PTB pH (S) = 1.67 (25°C) Certipur®

Merck Scandium ICP standard traceable to SRM from NIST Sc O in HNO 7% 1000 mg/l Sc Certipur®

H₂O 'da 5.0 mg/L TOC 
100 ml/paket

H₂O 'da 0.50 mg/L F
100 ml/paket

Merck Tris(hydroxymethyl)aminomethane volumetric standard, secondary reference material for acidimetry, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. Ph Eur,Reag. USP

H₂O 'da 8000 mg/L COD
100 ml/paket

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