I-8mm screw Caps yenziwe nge-polypropylene yekhwalithi ephezulu, ama-Caps anephrofayili ye-crimp noma ukuvalwa kwe-snap ukuze ahambisane nama-robotic autosamplers, i-septa ehlanganiswe ngaphambilini inciphisa ithuba lokungcola ngesikhathi sokulungiselela isampula, kuyilapho ilondoloza isikhathi sokulungiselela isampula elebhu.