Ubuso butunganywa hakoreshejwe uburyo bwihariye bwo gutwika/gutwika, butuma fibre idagwa ngo induze filtrate, urwego rw'imashini ziyungurura rufite ubushobozi bwo gufata uduce duto n'udukoko two mu bwoko bwa colloidal, kandi fibre ndende zikomeye zituma agasanduku k'imashini ziyungurura gashobora kuyungurura neza kandi kagakomeza gukoreshwa igihe kirekire.