V-vials feem ntau yog siv los khaws cov qauv lossis cov kev daws teeb meem thiab feem ntau siv hauv cov chaw soj ntsuam thiab biochemical. Hom vial no muaj lub hauv qab nrog V-shaped zawj, uas tuaj yeem pab khaws thiab tshem tawm cov qauv lossis kev daws teeb meem. V-hauv qab tsim pab txo qis qhov seem thiab ua rau thaj tsam saum npoo ntawm cov tshuaj, uas muaj txiaj ntsig zoo rau cov tshuaj tiv thaiv lossis kev tsom xam. V-vials tuaj yeem siv rau ntau yam kev siv, xws li cov qauv cia, centrifugation, thiab kev sim tshuaj ntsuam xyuas.