Sterile wrapped: every syringe is individually sealed, clean, safe and sterile, good for essential oil, science , industrial, applications of inks, perfume, lubricants, sealants, etc. Suit for: polypropylene barrel plunger for measuring and dispensing fluids, suit for use and experiments Wide Usage: these sterile syringes are suit for refilling, measuring, garden watering and essential oil separator, etc. Accurate: The clear plastic bottle makes it easier for you to observe the amount of liquid, so that it can absorb and transfer the liquid accurately. Easy to Use: rubber plunger is easy to push, absorbs liquid easily, and good airtightness will not cause liquid leakage.