Tiheduse määramiseks areomeetriga kasutatakse mõõtesilindreid mahuga mitte alla 0,75 l. Vedelikku valatakse silindrisse niipalju, et selle tase oleks servast mõne sentimeetri võrra madalamal.
Pass the three extracting solvents (4.1, 4.2 and 4.3) separately, through the prepared columns (6.) at a flow rate of 350 to 450 ml/h. Discard the first litre of eluate in each case and collect the next two litres in measuring cylinders (5.2).
