Qosina offers VacLok syringes, which are designed to maintain a vacuum or negative pressure with ease by locking the latex-free plunger in multiple positions. This eliminates the task of physically holding the plunger in place. Made from shatter-resistant polycarbonate, they are sturdier than standard polypropylene syringes and the clear barrel ensures visual clarity. The VacLok syringes are available in 10, 20, 30, and 60 cc.