Merck Tellurium standard solution traceable to SRM from NIST H TeO in HNO 0.5 mol/l 1000 mg/l Te Certipur®

H₂O 'da 50.0 mg/l NH₄-N
100 ml/paket

Merck Buffer Solution (boric acid/potassium chloride/sodium hydroxide) colour coded: yellow, tr aceable to NIST and PTB pH 10.00 (20°C) Certipur®

2 mol/l 1000 mg/L Sn
500 ml/paket

Merck Sodium hydrogen carbonate/sodium carbonate certified secondary standard reference material for Ph measurement; directly traceable to primary SRM from NIST/PTB pH(S) = 10.01 (25°C) Certipur®

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

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 Calcium carbonate volumetric standard, secondary reference material for complexometr y, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. USP

 0.5 mol/l 1000 mg/L Zn
100 ml/paket

0.5 mol/l 1000 mg/L Cr
500 ml/paket

Merck Sodium carbonate volumetric standard, secondary reference material for acidimetry, traceable to NIST SRM Certipur®

Merck Buffer Solution (citric acid/sodium hydroxide), traceable to SRM from NIST and PTB pH 6.00 (25°C) Certipur®

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