Mapulogalamu a Cathel Cathe ndi onse. Chipewacho chikasokonekera, mphamvu yamakina imagwiritsidwa ntchito zomwe zimapangitsa septum pakati pa mkombero wa vial ndi kapu. Screw Caps imapereka chisindikizo chabwino kwambiri ndipo imagwira ma septum m'malo obowoka. Palibe zida zofunika pamsonkhano.
