Abstract: A device for pipette tips having a refill pack, a plate having holes, pipette tips, a shell below the plate, an inner lid above the plate which has a base and side walls and a latch; a holder having a bottom; an outer lid having a base and side walls; a pivotal connection for the lid and holder; a support projecting from a side wall engaging the bottom of a lid side wall; a second latch having a support which latches with the first latch; an unlocking button having an actuator on the outside of the second lid side wall and a pressing element on the inside of the second lid side wall which may be pressed against the outside of the first lid side wall to deform the first lid side wall and undo the latching between the first and second latches.

Abstract: A device for pipette tips having a refill pack, a plate having holes, pipette tips, a shell below the plate, an inner lid above the plate which has a base and side walls and a latch; a holder having a bottom; an outer lid having a base and side walls; a pivotal connection for the lid and holder; a support projecting from a side wall engaging the bottom of a lid side wall; a second latch having a support which latches with the first latch; an unlocking button having an actuator on the outside of the second lid side wall and a pressing element on the inside of the second lid side wall which may be pressed against the outside of the first lid side wall to deform the first lid side wall and undo the latching between the first and second latches.

Abstract: An electrically conductive pipette tip having an elongated tubular body that has a bottom opening at the bottom end for the passage of liquid, and a top opening at the top end for the passage of air, and a passageway between the bottom opening and the top opening, wherein the body has at least one electrically-conductive region extending from the bottom opening to the top opening, and at least one transparent region consisting of plastic that extends from the passageway to the outside of the body.

Abstract: An electrically conductive pipette tip having an elongated tubular body that has a bottom opening at the bottom end for the passage of liquid, and a top opening at the top end for the passage of air, and a passageway between the bottom opening and the top opening, wherein the body has at least one electrically-conductive region extending from the bottom opening to the top opening, and at least one transparent region consisting of plastic that extends from the passageway to the outside of the body.

Abstract: Microtiter plate made of plastic, having a plurality of wells in a plate which has at least one break line that divides the plate into various segments. The break line includes a joint line which is formed by molding together various segments of the plate.