Uma kuqhathaniswa nezinto zokuhlunga ezilukiwe ezijwayelekile, inzwa yokuhlunga enaliti ebhontshiwe inezinzuzo ezilandelayo:
1. I-porosity enkulu kanye nokungena kahle komoya, okungathuthukisa umthamo womthwalo wemishini futhi kunciphise ukulahlekelwa kwengcindezi nokusetshenziswa kwamandla.Isihlungi esibhobozwe ngenaliti siyindwangu yokuhlunga ifayibha emfishane enhle enokuhlelwa okuntengantengayo kanye nokusabalalisa kwezimbotshana ezifanayo, futhi i-porosity ingafinyelela ngaphezu kuka-70%, okuphindwe kabili kunendwangu yokuhlunga elukiweyo.Ukusebenzisa izindwangu ezinenaliti njengezikhwama zokuhlunga kunganciphisa ubukhulu bezindlu zezikhwama futhi kunciphise kakhulu ukusetshenziswa kwamandla.
2. Ukusebenza kahle kokususa uthuli kanye nokugxila kwegesi ekhishwa kancane.
3. Ubuso buqedwa ngokugoqa okushisayo, ukuhlabelela noma ukumbozwa, indawo engaphezulu iphansi futhi ibushelelezi, akulula ukuyivimba, akulula ukuyilimaza, kulula ukuyihlanza, futhi inomsebenzi omude wenkonzo.Impilo yesevisi yenaliti ezwakalayo imvamisa izikhathi ezi-1 kuye kwezi-5 kunendwangu yokuhlunga elukiwe.
4. Ukuzinza kwamakhemikhali okuqinile.Hhayi kuphela ukuhlunga izinga lokushisa elijwayelekile noma igesi lokushisa eliphezulu, kodwa futhi ingahlunga igesi enolaka equkethe i-asidi ne-alkali.