Kalsiyum standart çözeltisi

Merck Potassium dichromate volumetric standard, secondary reference material for redox titrati on, traceable to NIST SRM Certipur® Reag. USP

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

H₂O 'da 0.250 mg/L NH₄
100 ml/paket

H₂O 'da 400 mg/L SO₄ 
100 ml/paket

H₂O 'da 0.50 mg/L NO₃-N
100 ml/paket

Merck Potassium tetraoxalate dihydrate certified secondary standard reference material for pH measurement; directly traceable to primary reference material from NIST/PTB pH (S) = 1.67 (25°C) Certipur®

Merck Selenium standard solution traceable to SRM from NIST SeO in HNO 0.5 mol/l 1000 mg/l Se Certipur®

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

Merck Sodium ICP standard traceable to SRM from NIST NaNO in HNO 2-3% 1000 mg/l Na Certipur®

H₂O 'da 50.0 mg/l NH₄-N
100 ml/paket

Merck Buffer solution (citric acid/sodium hydroxide/hydrogen chloride) colour: red traceable to SRM from NIST and PTB pH 4.00 (20 °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