Izigqoko zenziwe nge-polypropylene yekhwalithi ephezulu, ama-Caps anephrofayili yokuvalwa kwe-crimp noma i-snap ukuze ahambisane nama-robotic autosamplers, i-septa ehlanganiswe ngaphambilini inciphisa ithuba lokungcola ngesikhathi sokulungiselela isampula, kuyilapho ilondoloza isikhathi sokulungiselela isampula elebhu.