A na-ejikarị V-vials na-echekwa ihe nlele ma ọ bụ ihe ngwọta, a na-ejikarị ya na ụlọ nyocha nyocha na biochemical. Ụdị vial a nwere ala nwere oghere nwere ụdị V, nke nwere ike inye aka na-anakọta ma wepụ ihe nlele ma ọ bụ ngwọta. Nhazi V-ala na-enyere aka belata ihe fọdụrụ ma mee ka elu elu nke ngwọta ahụ dịkwuo mma, nke bara uru maka mmeghachi omume ma ọ bụ nyocha. Enwere ike iji V-vials maka ngwa dị iche iche, dị ka nchekwa nlele, centrifugation, na nyocha nyocha.