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Merck Buffer solution (citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 3.00 (25°C) Certipur®
Merck Buffer solution (di-sodium tetraborate) traceable to SRM from NIST and PTB pH 9.18 (25°C) Certipur®
Merck di-Sodium oxalate volumetric standard, secondary reference material for redox titration, tra ceable to NIST Standard Reference Material (SRM) Certipur® Reag. USP
Merck Zirconium ICP standard traceable to SRM from NIST ZrCl in HCl 7% 1000 mg/l Zr Certi pur®
Merck Gadolinium ICP standard traceable to SRM from NIST Gd O in HNO 2-3% 1000 mg/l Gd Certipur®
Merck Silicon ICP standard traceable to SRM from NIST SiO in NaOH 2 % 1000 mg/l Si Certipur®
Merck Zirconium standard solution traceable to SRM from NIST ZrCl in HCl 2 mol/l 1000 mg/l Zr Certipur®
Merck Yttrium standard solution traceable to SRM from NIST Y(NO ) in HNO 0.5 mol/l 1000 mg/l Y Certipur®
Merck Lithium standard solution traceable to SRM from NIST LiNO in HNO 0.5 mol/l 1000 mg/l Li Certipur®