Zaren vial hula na iya samun buɗewa don amfani da autosampler da daidaitaccen ƙari, ko kuma ana iya samar da hular polypropylene da membrane. An tsara waɗannan ƙullun tsummoki masu tsinke don amfani na lokaci ɗaya, kuma saboda babu iyakoki da hatimi don haɗuwa, lokacin shirye-shiryen samfurin ya ragu.