Растворы и реагенты для электрохимии
Standard titers for pH measurement
Standard titers for pH measurements. Standard titers are weighed amounts of chemical substances, which, when dissolved in a certain volume of water, produce buffer solutions (working Ph standards). Six sealed ampoules with precision weighed portions (dry) designed to prepare standard pH 3 buffer solutions with pH values of 1.65; 3.56; 4.01; 6.86; 9.18; 12.43. They are produced in a set of six modifications, differing in chemical composition, masses of substances, and Ph values of working standards prepared from standard titers. Manba: https://www.nv-lab.ru/catalog_info.php?ID=6083
Price on request
- Chemical composition of the standard titer: Mass of substances included in the standard titer
- Potassium tetraoxalate 2-waterKH3(C2O4)2-2H2O: 12.610 g
- Potassium hydrogen tartrate KNS4H4O6: 9,500g
- Potassium hydrophthalate KNS8H4O4: 10.120 g
- Potassium dihydrogen phosphate KH2PO4
- Sodium hydrogen phosphate Na2HPO4: 3.390 g
- 3.530 g
- Sodium tetraborate 10-water
- Na2B4O7•10H2O: 3.810
- Calcium hydroxide Ca(OH)2: 1.750