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by means of a volumetric pipette, introduce 20 ml of solution inside the column prepared according to 4.3.1, open the cock and let the solvent elute to the silica gel layer level.
mõõtpipetiga viiakse 20 ml lahust punkti 4.3.1 kohaselt ettevalmistatud kolonni, avatakse kraan ja lastakse lahustil voolata, kuni nivoo kolonnis jõuab silikageelikihi pinnani.
to each volumetric flask transfer by pipette 5,00 ml of the aluminium chloride reagent (3,4) and 5,00 ml of the ammonium chloride reagent (3.5).
igasse mõõtekolbi pipeteeritakse 5,00 ml alumiiniumkloriidi reaktiivi (3.4) ja 5,00 ml ammooniumkloriidi reaktiivi (3.5).