Ngokuvamile, ukuhlanzeka komoya kuncike kusihlungi somoya sokugcina, esivikelwe yizo zonke izihlungi zomoya zangaphambili. Izici ezahlukahlukene kufanele zicatshangelwe lapho ukhetha izihlungi zomoya. Nazi izimiso ezimbalwa ngezansi:
1.Ngokuhambisana nezindinganiso zokuhlanzwa ezidingekayo zangaphakathi, nquma ukusebenza kahle kwesihlungi somoya sokugcina. Kufanele futhi uqiniseke ukuthi inani lezihlungi zomoya ezidingekayo kanye nokusebenza kahle kwazo kokuhlunga. Uma indlu yangaphakathi idinga ukuhlanzwa okuvamile, ungakhetha isihlungi esiyinhloko. Ukuze uthole ukuhlanzwa okuphakathi, kufanele futhi ukhethe isihlungi esisebenza kahle phakathi, ngaphezu kweyokuqala. Ngakho-ke, izihlungi eziyinhloko, eziphakathi, nezisebenza kahle kakhulu kufanele zisetshenziswe ukuze kuhlangatshezwane nesidingo sokuhlanzwa okuhlanzekile kakhulu. Kufanele uhlele lezo zihlungi ngokunengqondo.
2.Nquma okuqukethwe uthuli lomoya wangaphandle. Isihlungi somoya sisusa uthuli emoyeni wangaphandle oluzongena ngaphakathi kamuva. Ikakhulukazi ekuhlungweni kwezigaba eziningi, kufanele ukhethe isihlungi ngokuya ngendawo yokusetshenziswa, izindleko zezingxenye ezisele, ukusetshenziswa kwamandla, ukulungiswa, njll.
3.Nquma amapharamitha esihlungi somoya. Amapharamitha afaka phakathi ukusebenza kahle kokuhlunga, ukumelana, izinga lokungena, umthamo wokubamba uthuli, njll. Kangangokunokwenzeka, kufanele ukhethe isihlungi somoya esinentengo efanele, esibonakala ngokusebenza kahle kakhulu, ukumelana okuphansi, umthamo omkhulu wokubamba uthuli, ijubane lokuhlunga elimaphakathi, umthamo omkhulu wokuphatha umoya, kanye nokufakwa okulula.
4.Hlaziya isici somoya oqukethwe uthuli. Isici saso siqukethe izinga lokushisa, umswakama, kanye nenani lokuqukethwe kwesisekelo se-acid noma i-organic solvent. Ezinye izihlungi zomoya zisetshenziswa ekushiseni okuphezulu, kanti ezinye zingasetshenziswa kuphela endaweni enokushisa okuvamile kanye nomswakama. Ngaphezu kwalokho, inani lokuqukethwe kwesisekelo se-acid noma i-organic solvent lizothinta ukusebenza kwesihlungi somoya.