Ngokuvamile, ukuhlanzeka kokunikezwa komoya kuncike kusihlungi somoya sokugcina, esivikelwe yizo zonke izihlungi zomoya zangaphambili.Izinto ezihlukahlukene kufanele zicatshangelwe lapho kukhethwa izihlungi zomoya.Nazi ezinye izimiso:
1.Ngokuhambisana nezindinganiso zokuhlanza ezidingekayo zasendlini, nquma ukusebenza kahle kwesihlungi somoya sokugcina.Kufanele futhi uqiniseke ukuthi inani lezihlungi zomoya ezidingekayo kanye nokusebenza kahle kwazo kokuhlunga.Uma okungaphakathi kudinga ukuhlanzwa okuvamile, ungakhetha isihlungi esiyinhloko.Ukuze uthole ukuhlanzwa okuphakathi, kufanele futhi ukhethe isihlungi esisebenza kahle kakhulu, ngaphezu kwesokuqala.Ngakho-ke, izihlungi eziyinhloko, eziphakathi, nezisebenza kahle kakhulu kufanele zisetshenziswe ukuze kuhlangatshezwane nemfuneko yokuhlanza okuhlanzekile.Kufanele uhlele ngokunengqondo lezo zihlungi.
2.Nquma okuqukethwe kothuli lomoya wangaphandle.Isihlungi somoya sisusa uthuli emoyeni ongaphandle oluzongena endlini kamuva.Ikakhulukazi ukwelashwa kokuhlunga kwezigaba eziningi, kufanele ukhethe isihlungi ngokuya ngendawo yohlelo lokusebenza, izindleko zezingxenye ezisele, ukusetshenziswa kwamandla, ukugcinwa, njll.
3.Nquma amapharamitha wesihlungi somoya.Imingcele ihlanganisa ukusebenza kahle kokuhlunga, ukumelana, izinga lokungena, umthamo wokubamba uthuli, njll. Ngangokunokwenzeka, kufanele ukhethe isihlungi somoya esinenani elifanele, esibonakala ngokusebenza kahle kakhulu, ukumelana okuphansi, umthamo omkhulu wokubamba uthuli, isivinini sokuhlunga esimaphakathi. , umthamo omkhulu wokubamba umoya, nokufakwa kalula.
4.Hlaziya impahla yothuli oluqukethe umoya.Izakhiwo zihlanganisa izinga lokushisa, umswakama, kanye nenani lokuqukethwe le-acidbase noma i-organic solvent.Ezinye izihlungi zomoya zisetshenziswa ekushiseni okuphezulu, kanti ezinye zingasetshenziswa endaweni enezinga lokushisa elijwayelekile kanye nomswakama.Ngaphezu kwalokho, inani lokuqukethwe le-acid-base noma i-organic solvent lizothonya ukusebenza kwesihlungi somoya.