I-Dewar Flask's Flassk yoyilo lwe-chial ye-chieter yoyilo, enciphisa ukutshintshwa kobushushu ukubonelela ngokufakelwa ngempumelelo kunye nokugcinwa kobushushu, sisiseko sokusebenza kwayo.
Iflashi ye-Dewar sisisombululo esifanelekileyo sokugcina iigesi ezingamanzi kunye nokuqhuba iimvavanyo zobushushu eziphantsi.
Ukuhlolwa rhoqo kwe-flasks kunye nembonakalo iyafuneka ukuba iqiniseke ukuba izixhobo zikhululekile, zikrexeza, okanye eziya kuthi ziyeke iiflethi ze-Dewar ekuphumeni.
I-Crygenagencregeeges Dewors i-Dework i-Flowks flasks equlethe i-nitrogen ye-witrogen okanye i-helium engamawele (i-Crysogen). Ukukhetha i-dewar echanekileyo ngesicelo sakho sibalulekile.
I-Flassi ephathekayo ye-nitrogen Dewar Flask ibonelela ngokufakelwa ngokuchanekileyo, ukuqinisekisa ukugcinwa okukhuselekileyo nokuxhomekeka kwe-nitrogen yolwelo.
