Flask ya conical ifite umubiri mugari ariko ijosi rifunganye, bigabanya amahirwe yo kumeneka muriki gikorwa cyingenzi cyo kuzunguruka. Ibi ni ngombwa cyane cyane iyo acide ikomeye ihari. Ijosi rifunganye kandi ryorohereza flask ya conic byoroshye gufata, mugihe urufatiro ruringaniye rwemerera gushyirwa hejuru.