Izinkomishi zengilazi-ezisemaceleni eziqondile, ezinokubukeka kwazo okulula nokunhle, ukuthungwa okucacile, nemisebenzi engokoqobo, seziphenduke izinto ezibalulekile zokuphuzwa kwasekhaya, ukuzijabulisa kwasehhovisi, nokuphuzwa kwetiye nsuku zonke. Ukuthi kusetshenziselwa ukuphatha iziphuzo, itiye, noma njengomhlobiso wetafula, ukucaca nokuhlanzeka kuyizidingo ezibalulekile. Nokho, ikhwalithi yezinkomishi zengilazi{3}}eziqondile ezinhlangothini emakethe iyahluka kakhulu. Eminye imikhiqizo inezinkinga ezifana nokungacaci kahle, ukungcola, nobuthaka, okuthinta ulwazi lomsebenzisi. Ngakho-ke, ukwazi izindlela zokukhetha zesayensi kubalulekile ekukhetheni-izinkomishi zengilazi eziseceleni zekhwalithi ephezulu{7}}ezicacile, ezimsulwa, futhi ezihlala isikhathi eside, ezilinganiselayo kanye nobuhle.
Uma ukhetha ingilazi{{0}yekhwalithi ephezulu eqondile{1}}esemaceleni, into yokuqala okumele ugxile kuyo yikhwalithi yezinto ezisetshenziswayo. -Izingilazi eziseceleni zekhwalithi ephezulu-zenziwe ngengilazi ephezulu ye-borosilicate, ehlanzekile, engenakho ukungcola, futhi inokudlulisa ukukhanya okungaphezu kuka-90%, okuholela ekubonakaleni okucacile nokugqamile ngaphandle kwamafu noma inkungu. Ngokuphambene, izibuko eziphansi ngokuvamile zenziwe ngengilazi evamile, equkethe ukungcola, okwenza ingilazi ibonakale insundu, futhi ungase ubone ngisho namabhamuza asobala noma izinhlayiya zesihlabathi.
Okwesibili, hlola ngokucophelela ukucaca nokungcola kwengilazi. Ingilazi-yekhwalithi ephezulu eqondile{2}}esemaceleni inendawo ebushelelezi, eyisicaba ngaphakathi nangaphandle, engenamihuzuko namabala, enogqinsi olufana nodonga. Lapho ubheka izinto ezikude ngengilazi, akufanele kube nokuhlanekezela noma ukufiphala. Naka ngokukhethekile imininingwane efana nerimu nesisekelo, ugweme noma yiziphi izingcezu zengilazi ezisele, ukungcola, noma izimpawu zokudubula. Ukwengeza, cindezela kancane ingilazi; ingilazi{6}yekhwalithi ephezulu izokhipha umsindo ocacile, omnandi, ongenakho ubuthuntu noma ukuhosha. Umsindo ongacacile cishe ubonisa amaphutha noma ukungcola okufihliwe.
Okokugcina, cabangela kokubili ukusebenza nokuqina lapho ukhetha inkomishi ozoyisebenzisa. Ngokusetshenziswa kwansuku zonke kwasekhaya nasehhovisi, khetha ukuqina ngokumaphakathi, okunethezekile-ukuba{2}}ubambe iqonde{3}}inkomishi eseceleni. Uma uphisa itiye noma ikhofi, khetha inkomishi ejiyile kancane enokwahlukanisa okuhle ukuze uqinisekise ukucaca ngenkathi uvimbela ukusha. Futhi, gwema amaphutha okuthenga avamile futhi ungajahi inani eliphansi ngokungaboni.