This 7mL dropping bottle is manufactured from natural low density polyethylene (LDPE) with white pigments added to help protect UV light-sensitive samples. It is not autoclavable. The extended controlled dropper tip dispenses one drop at a time with an average drop size of 41µL ± 5µL. This tip and the white screw cap are composed of radiation grade polypropylene and packaged separately from the bottle. The tip snaps firmly into place and is easily removed for filling. Both the tip and the screw cap are autoclavable; the bottle itself is not. Bottle Material: Natural LDPE. Color: White. Closure Material: Polypropylene. Closure Size: 20-410. Average Drop Size: 41µL ± 5µL. O.D. x Height: 19 x 63mm. Bottle Capacity: 7mL.