Merck Buffer solution (citric acid/sodium hydroxide) traceable to SRM from NIST and PTB pH 5.00 (25°C) Certipur®

Merck Silicon ICP standard traceable to SRM from NIST (SiO in NaOH 4 %) 10000 mg/l Si Certipur®

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

Merck Uranium ICP standard traceable to SRM from NIST UO (NO ) in HNO 2-3% 10 mg/l U Certipur®

Merck Buffer solution (boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 11.00 (20°C) Certipur®

Merck Buffer solution (potassium dihydrogen phosphate/di-sodium hydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (25°C) Cer tipur®

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 Lactose Standard 5 % Certified Reference Material for Karl Fischer Titration Aquastar®

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

Merck Potassium chloride solution (nominal 1.41 mS/cm) certified reference material for the measurement of electrolytic conductivity (c=0. 01 mol/l) Certipur®

H₂O 'da 40 mg/L SO₄
100 ml/paket

Merck Buffer solution (potassium hydrogen phthalate), traceable to SRM from NIST and PTB pH 4.01 (25°C) Certipur®

H₂O 'da 8000 mg/L COD
100 ml/paket