DIFF Subgroup
B01D 3/324 Full Title
Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping ( gas chromatography B01D15/08; destructive distillation C10B; preparation of alcoholic beverages by distillation C12H6/02) > Fractional distillation > Other features of fractionating columns
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.