GB/T 17810-2009 Translated English of Chinese Standard. (GBT 17810-2009, GB/T17810-2009, GBT17810-2009): Feed grade DL-methioninehttps://www.chinesestandard.net, 15 ต.ค. 2014 - 13 หน้า This Standard specifies the requirements, test methods, inspection rules, labeling, packaging, storage, and transportation of feed grade DL-methionine products. This Standard applies to the feed grade DL-methionine that uses methylthiopropanal, cyanide, sulfuric acid, and sodium hydroxide as main raw materials. |
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50-mL colorimetric tube absolute difference accurate to 0.01 acid automatic analyzer ADD 1 mL ADD 5 drops amino acid automatic anhydrous copper sulfate Appearance and characters arithmetic mean batch DILUTE with water drops of sodium factory-exit inspection Feed grade DL-methionine g of samples GB/T grams g greater than 0.3 heavy metals Hydrochloric acid solution inspection rules lead standard solution Loss on drying Magnetic stirrer mass of weighing mL of lead mL of nitric mL of potassium mL of silver mL of sodium mL of water mol/L Ninhydrin nitric acid solution NUMBER parallel determination results Potassium dihydrogen phosphate potassium iodide production Reagents and solutions sample solution samples accurate SHAKE evenly silver nitrate solution sodium chloride solution sodium hydroxide solution sodium sulfide solution sodium thiosulfate standard standard stock solution standard titration solution Technical indicators thiosulfate standard titration Type inspection unit is grams volumetric flask water to 25 WEIGH 1 g weighing dish