GB/T 1575-2018 Translated English of Chinese Standard. (GBT 1575-2018, GB/T1575-2018, GBT1575-2018): Determination of yield of benzene-soluble extract in brown coals [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, 21/07/2018 - 13 páginas This standard specifies the automatic extraction method and the conical flask extraction method for the determination of benzene-soluble extract yield in brown coal. The conical flask extraction method is the arbitration method. This standard applies to brown coal. |
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Palavras e frases frequentes
add 60 mL air drying box Analytical balance Appendix Automatic extraction method automatic extractor benzene liquid benzene vapor condenses benzene-soluble extract yield Blank test bottle of benzene brown coal coal is calculated coal sample accurate Coal sample mass condenser tube Conical flask bottom Conical flask extractor constant mass Constant temperature water cover the coal Determination of yield Determination steps distilled dripped back EB,ad enters the extraction extract in brown extraction chamber jacket Extraction temperature extraction-rinsing-evaporation device filter paper tube flask bottom bottle flask extraction method flask is immersed GB/T grams g hot water kPa to dry measured blank values mixed uniformly number and ISO pre-dried Remove the conical Repeatability limit Reproducibility limit results of benzene-soluble rinsing and evaporation sample is added standard clause number switch is pressed temperature of 80 temperature water bath tube with coal vacuum drying box water bath starts water jacket yield in brown yield of benzene-soluble