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

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

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

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

H₂O 'da 40.0 mg/L NO₃-N
100 ml/paket

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

Merck Buffer solution (boric acid/potassium chloride/sodium hydroxide solution), traceable to S RM from NIST and PTB pH 9.00 (25°C) Certipur®

H₂O 'da 100 mg/L N
100 ml/paket

H₂O 'da 10.0 mg/L Clˉ
100 ml/paket

H₂O 'da 15.0 mg/L NO₃-N
100 ml/paket

Merck Sodium carbonate volumetric standard, secondary reference material for acidimetry, traceable to NIST SRM Certipur®

Merck Zinc volumetric standard, secondary reference material for complexometry, traceable to NIST SRM Certipur® Reag. Ph Eur

H₂O 'da 50 mg/L Clˉ 
100 ml/paket