Indima ye-strontium carbonate ku-glaze: i-frit ukuncibilikisa izinto ezingavuthiwe noma ukuba umzimba wengilazi, okuyizinto ezisetshenziswa kakhulu ekuncibilikiseni i-glaze ye-ceramic. Uma incibilikiswa ibe yi-flux, iningi legesi lingasuswa ezintweni eziluhlaza ze-glaze, ngaleyo ndlela kuncishiswe ukukhiqizwa kwama-bubbles kanye nezimbobo ezincane ebusweni be-glaze ye-ceramic. Lokhu kubaluleke kakhulu emikhiqizweni ye-ceramic enezinga lokushisa eliphezulu lokudubula kanye nomjikelezo omfushane wokudubula, njenge-ceramics yansuku zonke kanye ne-ceramics ehlanzekile.
Ama-frit okwamanje asetshenziswa kabanzi kuma-glaze obumba asheshayo ashiswa ngokushesha. Ngenxa yokushisa kwawo okuphansi kokuncibilika kokuqala kanye nobubanzi obukhulu bokushisa, i-frit inendima engenakuphikwa ekulungiseleleni imikhiqizo ye-ceramic yezakhiwo ezishiswa ngokushesha. Ku-porcelain enezinga lokushisa eliphakeme lokushisa, izinto zokusetshenziswa zihlala zisetshenziswa njenge-glaze eyinhloko. Ngisho noma i-frit isetshenziselwa i-glaze, inani le-frit lincane kakhulu (inani le-frit ku-glaze lingaphansi kuka-30%).
I-glaze engenalo i-lead ingeyensimu yobuchwepheshe ye-frit glaze yezinto zobumba. Yenziwe ngezinto zokusetshenziswa ezilandelayo ngesisindo: 15-30% ye-quartz, 30-50% ye-feldspar, 7-15% ye-borax, 5-15% ye-boric acid, 3-6% ye-barium carbonate, 6-6% ye-stalactite. 12%, i-zinc oxide 3-6%, i-strontium carbonate 2-5%, i-lithium carbonate 2-4%, i-slaked talc 2-4%, i-aluminium hydroxide 2-8%. Ukufeza ukuncibilika kwe-lead kungahlangabezana ngokugcwele nezidingo zabantu zezinto zobumba ezinempilo nezisezingeni eliphezulu.