GB 15892-2020 Translated English of Chinese Standard. (GB 15892-2020, GB15892-2020): Polyaluminium chloride for treatment of drinking water [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 20 mars 2021 - 37 pages This Standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of polyaluminium chloride for treatment of drinking water. This Standard applies to polyaluminium chloride for treatment of drinking water. The product is mainly used for the purification of drinking water. |
Expressions et termes fréquents
100 mL volumetric absolute difference according to formula ADD 20 mL Allowable difference alumina standard solution Analytical procedure arithmetic mean arsenic atomic absorption spectrometry buffer solution cadmium calculated according calibration curve chloride reference titration chromium content is calculated copper sulfate reference curve or regression EDTA EDTA solution Electrically heated atomic grams g Guaranteed reagent heated atomic absorption hollow cathode lamp hydrochloric acid solution mark and shake mass concentration mass fraction measure the absorbance Method summary milliliters mL mL beaker mL of hydrochloric mL of nitric mL of water mL volumetric flask molar mass nitric acid solution parallel determination results PIPETTE polyaluminium chloride potassium borohydride potassium fluoride Reagents and materials reference titration solution regression equation Result calculation sodium diethyldithiocarbamate sodium hydroxide standard stock solution stannous chloride sulfate reference titration test portion test solution titration solution consumed total volume trichloromethane value is expressed volume of test water to dilute zinc chloride reference