Verifikasyon Standardı

Merck Thallium standard solution traceable to SRM from NIST TlNO in HNO 0.5 mol/l 1000 mg/l Tl Certipur®

H₂O 'da 0.400 mg/l NH₄-N
100 ml/paket

Merck Potassium hydrogen phthalate certified secondary standard reference material for pH m easurement; directly traceable to primary SRM from NIST/PTB pH(S) = 4.00
(25°C) Certipur®

Merck Buffer solution (citric acid/sodium hydroxide) traceable to SRM from NIST and PTB pH 5.00 (20°C) Certipur®

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

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

Merck Potassium chloride solution (nominal 111 mS/cm) certified reference material for the measurement of electrolytic conductivity (c=1. 0 mol/l) 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 Ca
100 ml/paket

Merck di-Sodium oxalate volumetric standard, secondary reference material for redox titration, tra ceable to NIST Standard Reference Material (SRM) Certipur® Reag. USP

H₂O 'da 50.0 mg/l NH₄-N
100 ml/paket

H₂O 'da 4.00 mg/L PO₄-P (toplam)
100 ml/paket