Abstract: A micro tube cap opening device includes a tubular holder, a lifting bar and a mounting sleeve. The holder has a well supported by a sidewall of the holder and open at a first end thereof for receiving therein a tube body of a micro tube. The mounting sleeve is attached on and along the sidewall of the holder. The lifting bar is slidably mounted by and through the mounting sleeve to undergo movement between a retracted position and an extended position. A first end of the lifting bar in the retracted position is disposed adjacent to the first end of the holder and adjacent to a cap of the micro tube in a closed position interference fitted into the tube body of the micro tube when the tube body of the micro tube is disposed within the well of the holder.

Abstract: A deep well rack assembly for pipette tips and the like includes an enclosure having a plurality of openings in a top wall thereof, a plurality of wells in the enclosure extending below the top wall and openings for receiving and retaining pipette tips, and a cover for overlying the top wall of the enclosure and the wells and pipette tips. The top wall of the enclosure either has a plurality of annular depressions formed therein and surrounding the openings or a plurality of raised annular rings formed thereon and surrounding the openings. The wells are disposed within an interior cavity of the enclosure. Each well has a continuous side wall attached at an open top end to the top wall and surrounding one of the openings therein. Each well is adapated to receive a pipette tip such that the pipette tip is disposable within the well and the respective annular depression or raised annular ring of the top wall of the enclosure.