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1 toradh

  1. SCIENCE|natural and applied sciences|physical sciences|chemistry

    #638291

    IATE #2148341
    modh polaraiméadrach Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    polarimetrische Methode | polarimetrisches Verfahren
    de
    polarimetric method | Ewers method | Ewers polarimetric method
    en
    Sainmhíniú the method comprises two determinations. In the first, the sample is treated with dilute hydrochloric acid. After clarification and filtration the optical rotation of the solution is measured by polarimetry.In the second, the sample is extracted with 40 % ethanol. After acidifying the filtrate with hydrochloric acid, clarifying and filtering, the optical rotation is measured as in the first determination Tagairt "Commission Regulation (EC) No 152/2009 laying down the methods of sampling and analysis for the official control of feed CELEX:32009R0152/EN"
    méthode polarimétrique
    fr