It is only by using an apparatus of this kind that effectual separation is obtained, and the process also has the advantage of producing an almost odourless distillate, all the strong-smelling compounds passing uncondensed into K. The amount of steam used, as measured by the water condensed in K, is usually from 50 to 100 per cent, of the weight of oil.
403 condense in order, the heaviest in s, the lighter in tl and *„.  It is only by using an apparatus of this kind that effectual separation is obtained, and the process also has the advantage of producing an almost odourless distillate, all the strong-smelling compounds passing uncondensed into K. The amount of steam used, as measured by the water condensed in K, is usually from 50 to 100 per cent, of the weight of oil.  Oelheim residuum yields 78 per cent, of thick oils in three fractions in this apparatus.