GB/T 5009.81-2003 Translated English of Chinese Standard. (GBT 5009.81-2003, GB/T5009.81-2003, GBT5009.81-2003): Method for Analysis of Hygienic Standard of Stainless Steel Food Containers and Table Wares [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, 2 sep. 2016 - 12 sidor This Standard specifies the method for the analysis of the hygienic standard of stainless steel food containers and table wares. This Standard applies to the determination of all hygienic indicators of all kinds of kitchen wares, table wares, food containers, as well as other containers, wares and devices in contact with foods, which are made of the material of stainless steel. |
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000 mL volumetric 25 mL stoppered 60 mL separating abscissa acetic acid add 2 mL add water adjust the zero ammonium citrate dibasic ammonium dihydrogen phosphate Analysis of Hygienic Analysis steps beaker bromine Calculation of results calibration curves cm cuvettes colorimetry Containers and Table determine the absorbance dissolve to 100 Draw standard curves ethanol g/L potassium permanganate Graphite furnace atomic Hygienic Standard Lead standard solution liter mg/L metal content Method for Analysis microgram milligram mix evenly mL of ammonium mL of sample mL of soaking mL separating funnel mL stoppered cuvettes mL volumetric flask mol/L ammonia water NH4OH nickel and lead nitric acid quantify by comparing reagent blank sample soaking solution sample solution sodium hydroxide solution sodium pyrophosphate solution to place Spectrophotometer Stainless Steel Food Standard of Stainless standard series standard working solution Steel Food Containers table wares volume fraction water to dilute water to dissolve weigh 5 g