Merck Buffer Solution (di-sodium hydrogen phosphate/sodium hydroxide) traceable to SRM from NIST und PTB pH 12.00 (25°C) Certipur®

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

0.5 mol/l 1000 mg/L Cr
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®

H₂O 'da 2.00 mg/l NH₄-N
100 ml/paket

Merck Buffer solution (citric acid/sodium hydroxide/hydrogen chloride) traceable to SRM from NIST and PTB pH 4.00 (25°C) Certipur®

2 mol/l 1000 mg/L Sb
500 ml/paket

0.5 mol/l 1000 mg/L Pd
500 ml/paket

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

H₂O 'da 50 mg/L Clˉ 
100 ml/paket

0.5 mol/l 1000 mg/L K
500 ml/paket

1000 mg/L NO₂
500 ml/paket

Klorür, COD fotometrik metodların kalite kontrolleri için Spectroquant®