Wide usage: these sterile syringes are suit for refilling, measuring, garden watering and essential oil separator, etc. Sterile wrapped: every syringe is individually sealed, clean, safe and sterile, good for essential oil, science lab, industrial, applications of inks, perfume, lubricants, sealants, etc. Suit for: polypropylene barrel plunger for measuring and dispensing fluids, suit for lab use and experiments