Abstract: A device for dispensing liquids in drop form of substantially uniform size is provided which includes a container having a dropper tip including a passageway for ingress of air to and egress of liquid from the device, the passageway communicating between the container and an orifice in the dropper tip; means for temporarily reducing the volume of the container; and, disposed within the dropper tip, across the passageway, a microporous composite membrane with pores of a size to resist passage of contaminants. The membrane has a liquophilic component which permits delivery of drops of a liquid to a desired location outside the container and a liquophobic component which is adapted to resist the passage of such liquid but to permit the passage therethrough of air. Both the liquophilic and liquophobic components of the membrane (which intersects the passageway) communicate with the passageway.

Abstract: A double tip drug dispensing and metering device having a bellows or conventional squeeze body container between the double tips. The device being adapted to hold at least two substances in solution which are required to be separated until just prior to dispensation.

Abstract: There is disclosed a novel bottle and cap closure system for dropper bottles and the like which comprises a set of lugs or cams and a snap bead provided in the cap and a set of lugs or cams provided on the neck portion of the bottle. After the bottle is filled, the cap is secured to the bottle by having the snap bead on the cap engage the lugs or cams on the bottle. The snap bead in the cap is carried on the circumferential lower edge of a tear-away band. After the tear-away band is removed to use the contents of the bottle, the cap is re-secured to the bottle by engaging the lugs or cams in the cap to the lugs or cams on the bottle.