FI (Note)/(Index) list

Descriptions for B01D71/00 and notes/indexes are displayed on this screen.

B01D71/00 Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor [5]

Note(s)
    In this group, if the material is a composition it is classified according to the constituent present in highest proportion. This constituent is classified according to the last place rule, see Note before group B01D 61/00. If there is more than one constituent present in equal highest proportions, then each of these constituents is classified according to the last place rule.[5]Manufacturing processes, if considered of interest, are also classified in group B01D 67/00.