Ama-screw top vials akhiqizwa yi-Aijiren ayatholakala kuma-calibers amathathu ahlukene, 8mm, 9mm no-10mm. Izikopelo ze-PP screw zenziwe ngezinto ezisezingeni eliphakeme ze-polypropylene. Uma inani lamasampula lihlolwe lincane, lingasetshenziswa futhi ngokufaka okuncane. Amabhodlela ane-calibers ehlukene anokufakwa okuhlukile okufanayo okuncane.