Iqhaza le-strontium carbonate ku-glaze: i-frit iwukuncibilikisa ngaphambili impahla eluhlaza noma ukuba umzimba wengilazi, okuwumathiriyeli osetshenziswa kakhulu we-flux we-ceramic glaze. Uma inyibilika ngaphambili ibe yi-flux, igesi eningi ingasuswa ku-glaze impahla eluhlaza, ngaleyo ndlela kuncishiswe ukukhiqizwa kwamabhamuza nezimbobo ezincane endaweni ecwebezelayo ye-ceramic. Lokhu kubaluleke kakhulu emikhiqizweni ye-ceramic enezinga lokushisa eliphezulu lokudubula kanye nomjikelezo omfushane wokudubula, njengezitsha zobumba zansuku zonke nezitsha ze-sanitary.
Ama-Frits okwamanje asetshenziswa kabanzi ekucwebezelweni kobumba okwenziwa ngokushesha. Ngenxa yezinga lokushisa eliphansi elincibilikayo lokuqala kanye nobubanzi obukhulu bokushisa, i-frit inendima engenakushintshwa ekulungiseleleni imikhiqizo ye-ceramic eshiswa ngokushesha. Ku-porcelain enezinga lokushisa eliphakeme lokudubula, izinto ezingavuthiwe zihlala zisetshenziswa njenge-glaze eyinhloko. Ngisho noma i-frit isetshenziselwa i-glaze, inani le-frit lincane kakhulu (inani le-frit ku-glaze lingaphansi kwama-30%).
I-frit glaze engenamthofu ingeyomkhakha wobuchwepheshe we-frit glaze yezitsha zobumba. Yenziwe ngezinto zokusetshenziswa ezilandelayo ngesisindo: 15-30% yequartz, 30-50% ye-feldspar, 7-15% ye-borax, 5-15% ye-boric acid, 3-6% ye-barium carbonate, 6- I-6% ye-stalactite. 12%, zinc oxide 3-6%, strontium carbonate 2-5%, lithium carbonate 2-4%, slaked talc 2-4%, aluminium hydroxide 2-8%. Ukuthola iqanda lokuncibilika komthofu kungahlangabezana ngokugcwele nezidingo zabantu zezitsha zobumba ezinempilo nezisezingeni eliphezulu.