CombiCheck 20

Merck Benzoic acid volumetric standard, secondary reference material for alkalimetry, traceabl e to NIST Standard Reference Material (SRM) Certipur® Reag. Ph Eur,Reag. USP

H₂O 'da 40 mg/L SO₄
100 ml/paket

Merck Erbium ICP standard traceable to SRM from NIST Er O in HNO 2-3% 1000 mg/l Er Certipur®

Merck Tantalum ICP standard traceable to SRM from NIST (NH ) TaF in H O 1000 mg/l Ta Certipur®

Merck Ytterbium ICP standard traceable to SRM from NIST Yb O in HNO 2-3% 1000 mg/l Yb Certipur®

Merck Beryllium standard solution Be O(C H O ) in HNO 0.5 mol/l 1000 mg/l Be Certipur®

2 mol/l 1000mg/L Pt 
100 ml/paket

H₂O 'da 15.0 mg/L NO₃-N
100 ml/paket

Merck Barium standard solution traceable to SRM from NIST Ba(NO ) in HNO 0.5 mol/l 1000 mg/l Ba 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®

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®

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