5ml Manual Dispensing Syringe Our manual dispensing syringes have luer lock fittings which mean that dispensing needles and tips are firmly located and will not fall off during dispensing. They have calibrations on the barrel, and each syringe consists of a polypropylene barrel, NBR stopper and polythene plunger. These are NON-STERILE coming as a single unit and NOT for medical use - purely industrial use!