Volumetric flasks feem ntau yog siv los tsim cov kev daws teeb meem ntawm qee qhov concentration. Nws yog lub caj dab slender, pear-puab tiaj tiaj-bottomed iav raj mis nrog rau hauv av ntsaws. Lub bottleneck yog engraved nrog ib tug cim. Thaum cov kua hauv lub raj mis nce mus txog cov kab cim ntawm qhov ntsuas kub, nws qhov ntim yog tus naj npawb ntawm ntim tau qhia