Merck Certified sec. standard reference buffer solution di-sodium tetraborate decahydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 9.18 (25°C) Certipur®

Merck Tungsten standard solution traceable to SRM from NIST (NH ) WO in H O 1000 mg/l W Certipur®

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

H₂O 'da 1.000 mg/L SiO₂
100 ml/paket

Merck Cesium standard solution traceable to SRM from NIST CsNO in HNO 0.5 mol/l 1000 mg/l Cs Certipur®

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

Merck Zirconium ICP standard traceable to SRM from NIST ZrCl in HCl 7% 1000 mg/l Zr Certi pur®

Merck Tris(hydroxymethyl)aminomethane volumetric standard, secondary reference material for acidimetry, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. Ph Eur,Reag. USP

Merck Sulfur ICP standard traceable to SRM from NIST H SO in H O 1000 mg/l S Certipur®

Merck Buffer solution (citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 2.00 (20°C) Certipur®

Merck Thallium ICP standard traceable to SRM from NIST TlNO in HNO 2-3% 1000 mg/l Tl Certipur®

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

Merck Iron ICP standard traceable to SRM from NIST Fe(NO ) in HNO 10% 10000 mg/l Fe Certipur®