Indima ye-strontium carbonate kwi-glaze: i-frit kukunyibilikisa izinto ezikrwada okanye zibe yiglasi, nto leyo esetyenziswa kakhulu kwi-flux raw material kwi-ceramic glaze. Xa inyibilikiswa kwi-flux, uninzi lwegesi lungasuswa kwi-glaze raw material, ngaloo ndlela kuncitshiswe ukuveliswa kwamaqamza kunye nemingxunya emincinci kumphezulu we-ceramic glaze. Oku kubaluleke kakhulu kwiimveliso ze-ceramic ezinobushushu obuphezulu bokudubula kunye nomjikelo omfutshane wokudubula, njenge-ceramics zemihla ngemihla kunye ne-sanitary ceramics.
Iifriti okwangoku zisetyenziswa kakhulu kwiiglaze zobumba ezikhawulezayo. Ngenxa yobushushu bayo obuphantsi bokunyibilika kokuqala kunye nobushushu obukhulu bokudubula, ifriti inendima engenakutshintshwa ekulungiseleleni iimveliso zeseramikhi zokwakha ezivutha ngokukhawuleza. Kwiporcelain enobushushu obuphezulu bokudubula, izinto eziluhlaza zihlala zisetyenziswa njengeglaze ephambili. Nokuba ifriti isetyenziselwa iglaze, ubungakanani befriti buncinci kakhulu (ubungakanani befriti kwiglaze bungaphantsi kwama-30%).
I-frit glaze engenalo i-lead ikwicandelo lobuchwephesha le-frit glaze yeeseramikhi. Yenziwe ngezi zinto zilandelayo ngobunzima: i-15-30% ye-quartz, i-30-50% ye-feldspar, i-7-15% ye-borax, i-5-15% ye-boric acid, i-3-6% ye-barium carbonate, i-6-6% ye-stalactite. I-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%. Ukufezekisa ukunyibilika kwe-lead kungahlangabezana ngokupheleleyo neemfuno zabantu zeseramikhi ezisempilweni nezisemgangathweni ophezulu.