The system includes a pipette tip with a proximal end that has a rim. The rim defines a proximal opening adapted to receive a pipetter, and the rim includes a rim conical edge. The system also has a support card with a top surface, a pipette tip receiver opening within the top surface, the opening adapted to receive the pipette tip, and the opening has a receiver opening conical edge. The rim conical edge and the receiver conical edge are constructed such that when the pipette tip is disposed of in the pipette tip receiver opening, the rim conical edge abuts the receiver opening conical edge, and the top surface is flush with or nearly flush with than the rim.