GB/T 6283-2008 Translated English of Chinese Standard. (GBT 6283-2008, GB/T6283-2008, GBT6283-2008): Chemical Products - Determination of Water Karl Fischer Method (General Method)https://www.chinesestandard.net, 24.12.2016 - 26 Seiten This Standard specifies a general method for the determination of the free or crystal water content of a sample by the Karl Fischer visual method and the coulometric method. |
Inhalt
| 3 | |
Visual Method | 10 |
Appendix A Normative Sulfur Dioxide Generating Equipment | 18 |
Normative Coulometric BackTitration Apparatus | 24 |
Häufige Begriffe und Wortgruppen
5A molecular sieve absorb the supernatant amount of water Analytically pure automatic burette burette to add calculated by Formula Calibration of Karl calibration to titrate chloroform consumed Karl content of specimen Coulometric Back-Titration coulometric method crystal water determined through subtraction Drying tube electricity measuring device electromagnetic stirrer End-point electricity measuring ethylene glycol monomethylether expressed in mg/mL filled with desiccant Fischer reagent stipulated frost glass joint GB/T indicates the mass inject 25mL iodine mass fraction mass of added methanol order to react Platinum electrode pointer is suddenly pyridine react with slight reagent for calibration reagent is greater reagent to titrate record the volume rubber plug sample silicone grease small tube sodium sulfite sodium tartrate solution turns sulfur dioxide sulfuric acid syringe to inject titer of Karl titrating 10mL titration vessel to-be-tested specimen turns to brown visual method volume of consumed volumetric flask water content water in reagent water-methanol standard solution