Injin shafawa galibi ana amfani da shi ne a masana'antun magunguna da abinci. Tsarin injina ne mai inganci, mai adana kuzari, mai aminci, tsafta, kuma mai bin tsarin GMP, ana iya amfani da shi don shafa fim ɗin halitta, shafa mai narkewa a ruwa, shafa mai digo a cikin ƙwayoyin cuta, shafa mai sukari, shafa mai cakulan da alewa, wanda ya dace da allunan magani, ƙwayoyi, alewa, da sauransu.

A ƙarƙashin aikin juyawar ganga mai rufi, babban core yana motsawa akai-akai a cikin ganga. Famfon peristaltic yana jigilar maganin shafawa kuma yana fesa bindigar fesawa mai juyewa a saman core. A ƙarƙashin matsin lamba mara kyau, sashin sarrafa iska mai shiga yana samar da iska mai tsabta mai zafi zuwa gadon kwamfutar hannu bisa ga tsarin da aka saita da sigogin sarrafawa don busar da core. Iskar zafi tana fita ta cikin sashin maganin iska ta hanyar ƙasan core ɗin danye, don haka maganin shafawa da aka fesa a saman core ɗin danye da sauri ya samar da fim mai ƙarfi, mai yawa, santsi, da saman don kammala murfin.