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

 H₂O 'da 400 mg/L COD
100 ml/paket

1000 mg/L F 
500 ml/paket

Merck Buffer Solution (citric acid/sodium hydroxide), traceable to SRM from NIST and PTB pH 6.00 (25°C) Certipur®

Merck Sodium tartrate dihydrate Certified Reference Material for Karl Fischer Titration 15.66% Aquastar®

H₂O 'da 100 mg/L COD
100 ml/paket

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

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

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

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

Merck Potassium hydrogen tartrate certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S) = 3.63 / pH(S) = 3.55 (25°C) Certipur®

 0.5 mol/l 1000 mg/L Co
500 ml/paket