Valp vials matsi da septum tsakanin bakin gilashin vial da kuma waɗanda aka zalunta aluminum hula. Wannan yana samar da kyakkyawar hatimin hatimi yana hana ruwa. Septum yana zaune zaune yayin soki ta allurar autosampler. Cap vial Val Valp yana buƙatar kayan aikin masu laifi don aiwatar da tsarin hatimin. Don ƙarancin ƙara girma, kayan aikin masu laifi sune zaɓi. Don babban ƙara girma, ana samun masu laifi na atomatik.
