Abstract: A medication dosage timing apparatus which measures and displays time in response to the opening and closing of a medication bottle or container. A timing circuit and display are mounted on a circuit board and attached to a container cap. A battery is mounted on a disk which slidably moves within the container cap between a first position wherein electrical contacts on the circuit board engage the battery and activate or power the timing circuit and display, and a second position wherein the electrical contacts are disengaged from the battery and the timing circuit and display are deactivated. When the container cap is attached to the container, the battery and disk are held in the first activating position, and when the container cap is removed from the container, the battery and disk slide down into second, deactivating position. Each time a user opens and closes the medication container, the timing circuit and display are reset and re-started.

Abstract: A positive displacement pipette tip in which a one-piece piston having a tapered end slides within a capillary tube having a matching taper. The capillary tube includes a collar with a snap ring for attachment to the body of a pipette. The piston includes a two-prong fork-like coupling for attachment to the plunger of the pipette. Attachment of the pipette tip can be made without physical handling, and ejection is achieved by an over extension of the pipette plunger. The pipette tip has a precision outlet orifice for drawing and dispensing liquid, and is suitable for DNA research such as that involving polymerized chain reactions.