Yanzu, akwai hanyoyi daban-daban na tsaftace gilashin a dakin gwaje-gwaje, wanke hannu, wanke-wanke na ultrasonic, injin wanki mai atomatik, da injin wanki na atomatik. Duk da haka, tsaftar tsaftacewa koyaushe tana tantance daidaiton gwajin na gaba ko ma nasarar gwajin. Editan ya taƙaita manyan abubuwa da dama da ke shafar tsaftacewa, kuma ya taƙaita su zuwa maki biyar na CTWMT:

C: Kimiyya
Dangane da manufar kayan tsaftacewa, zaɓi sassa daban-daban na sabulun wanki

T: Zafin jiki 
Gabaɗaya, mafi girman zafin wankewa zai sami mafi kyawun tasirin wankewa

W: Ingancin Ruwa
Ruwa shine babban hanyar tsaftacewa idan ana amfani da ruwa, amma ingancin ruwa ya bambanta daga wurare daban-daban, don haka ba za a iya tabbatar da ingancin tsaftacewa sosai ba.

M: ƙarfin injina
Ana cire ragowar daga saman jirgin ruwa ta hanyar ƙarfin waje

T: Lokaci
Duk sauran abubuwa daidai suke, gabaɗaya, tsawon lokacin tsaftacewa, za su sami ingantaccen tasirin tsaftacewa.

Ka'idar injin wankin gilashi ta atomatik: dumama ruwa, ƙara sabulu na musamman ta famfon zagayawa cikin bututun kwanduna na ƙwararru tare da ƙarancin matsi da yawan zagayawa don wanke saman gilashin ciki, Man feshi na sama da ƙasa suna tsaftace saman gilashin waje. Tare da lokacin tsaftacewa da matakai na kimiyya, don cimma manufar tsaftace gilashin.