A cikin ofis, gida, da saitunan cin abinci, kofuna masu bango biyu{0} sun zama kwantenan shaye-shaye da aka fi so ga masu siye da masu siye saboda kariyar zafinsu, hana ƙonewa, bayyanannu, da kyan gani. Juriya mai zafi, azaman ainihin alamar aminci, kai tsaye yana ƙayyade tsawon rayuwar samfurin da amincinsa, kuma shine babban abin la'akari don siyan manyan kamfanoni da kyaututtukan da aka keɓance.
Juriyar zafi na kofin gilashi mai bango biyu{0} ya dogara da farko akan kayan gilashin da aka yi amfani da su. A halin yanzu, yawancin samfuran yau da kullun a kasuwa suna amfani da gilashin borosilicate mai girma, wanda ke da fa'ida mai mahimmanci a juriyar zafi idan aka kwatanta da soda{2}} gilashin lemun tsami. Babban gilashin borosilicate ya ƙunshi silicon dioxide (sama da 80%) da boron oxide, tare da abun ciki na ƙarfe na alkali na ƙasa da 10%. Ana harba shi a yanayin zafi sama da digiri 600 na ma'aunin celcius kuma yana da ƙarancin haɓakar haɓakar zafin rana, yadda ya kamata yana tsayayya da tasirin damuwa sakamakon canjin zafin jiki.
Babban{0}}Borosilicate ninki biyu{1} kofuna masu bangon bango na iya jure yanayin zafi daga -20 digiri zuwa digiri 150. A cikin amfani na yau da kullun, suna iya sauƙin ɗaukar ruwan zãfi kai tsaye a digiri 100 ba tare da sakin abubuwa masu cutarwa ba, saduwa da ƙa'idodin aminci. Sabanin haka, soda na yau da kullun{8}} gilashin lemun tsami sau biyu{10}kofuna masu bango kawai suna jure yanayin zafi har kusan digiri 100 kuma suna da saurin fashewa a ƙarƙashin saurin canjin yanayin zafi, rashin biyan buƙatun akai-akai, amfani da yanayi da yawa. Wannan shine ainihin dalilin da yasa ƙwararrun masu siye ke ba da fifiko ga babban gilashin borosilicate.
Tsarin musamman na kofuna na gilashin biyu{0} ba wai kawai yana ba da zafi ba kawai{1}} gogewar gogewa da ƙona wuta amma kuma a kaikaice yana haɓaka juriya da kwanciyar hankali gabaɗaya. Babban ƙirar sa yana cikin sararin tsaka-tsakin tsaka-tsakin tsaka-tsakin tsaka-tsakin ciki da na waje -ko dai an fitar da shi ko kuma a cika shi da iska mai sanyi{4}} yana samar da “shamaki na halitta” kan canja wurin zafi. Dukkanin hanyoyin canja wuri guda uku na zafi (gudanarwa, convection, da radiation) suna danne yadda yakamata a cikin interlayer: iska tana da ƙarancin ƙarancin zafi, kuma har yanzu iska tana toshe hanyar tafiyar zafi; yanayin yanayi kai tsaye yana kawar da matsakaici don haɗuwa, yana da wuya a gudanar da zafi daga gilashin ciki zuwa Layer na waje. Wannan tsarin tsarin yana ba da fa'idodi guda biyu: na farko, zafin jiki na bangon gilashin waje ya kasance a cikin kewayon aminci wanda ke da sauƙin isa ga jikin ɗan adam, yana ba da damar sauƙin sarrafawa koda lokacin cika da ruwan zafi sama da digiri 95, guje wa haɗarin ƙonewa; Na biyu, zafin gilashin ciki yana kulle yadda ya kamata, yana rage damuwa sakamakon bambance-bambancen zafin jiki mai yawa tsakanin ciki da wajen kofin, don haka rage yiwuwar fashewa a ƙarƙashin yanayin zafi.
Ga masu siyan kamfani, ban da mai da hankali kan kayan aiki da daidaitattun yarda, yana da mahimmanci kuma a yi la'akari da juriyar juriyar zafin samfurin dangane da yanayin amfanin da aka yi niyya. Misali, a cikin saitunan ofis inda ake yawan amfani da ruwan zafi don yin shayi da kofi, samfuran da aka yi da babban gilashin borosilicate tare da bango mai kauri sun zama dole don haɓaka juriya da ƙarfin zafi. A cikin saitunan dafa abinci, samfura tare da hannaye sun fi dacewa don ƙara haɓaka ƙwarewar riko yayin amfani da yanayin zafi mai girma-. Bugu da ƙari kuma, samfuran masana'antu masu daraja suna da mahimmanci-samfuri masu amfani da tsarin rufewa mara wutsiya suna ba da mafi kyawun hatimi na tsaka-tsaki, mafi tsayayyen juriya da rufi, kuma babu sauran wuraren walda a ƙasa, yana haifar da kamanni mai daɗi, yana sa su dace da kyaututtukan kamfani na musamman.