Farin foda ko granule, kuma ana iya raba shi zuwa nau'ikan guda huɗu: waɗanda ba ionic ba, anionic, cationic da Zwitterionic.Polyacrylamide (PAM) shine babban tsari na homopolymers na acrylamide ko copolymerized tare da sauran monomers.Yana daya daga cikin polymers masu narkewar ruwa da aka fi amfani dashi.Ana amfani da shi sosai wajen cin gajiyar mai, gyaran ruwa, masaku, yin takarda, sarrafa ma'adinai, magunguna, aikin gona da sauran masana'antu.Babban filayen aikace-aikacen a ƙasashen waje sune maganin ruwa, yin takarda, ma'adinai, ƙarfe, da dai sauransu;A halin yanzu, mafi girma da ake amfani da PAM shine filin samar da mai a kasar Sin, kuma mafi saurin girma shine filin sarrafa ruwa da filin yin takarda.