Amashanyarazi yimikorere yimikorere yabugenewe kugirango akure neza kandi akwirakwize mikorobe, udukoko, cyangwa inyamaswa z’inyamabere. Ubwoko bwinshi busanzwe burimo flask yumuco wumubiri, flasks ya Erlenmeyer, hamwe na flasks.
Ubwato bumwe bwumuco burashobora kongera gukoreshwa, ariko amahirwe yo kwanduza ariyongera hamwe na buri gusubira inyuma bitewe no kwiyongera kwimyuka mito mito yo gufungura flask.