Syringe, Polypropylene, Luer Lock, 3mL, Non-Sterile, Bulk, Pack of 100. Dispenser packs of non-sterile syringes make sense. Theyre more economical and easier on the environment. Available in both luer slip and luer lock styles. These all polypropylene syringes are latex-free and contain no rubber or silicone. The plastic plunger has a smooth draw and a positive safety stop to prevent accidental spills.