Abstract: A system is disclosed for measuring head framing and tip straightness in a liquid handler. The present system uses a test plate, having an upper surface formed of clay or other impressionable material. The test plate may be placed at a liquid handling station. Pipette tips may then be loaded onto the head, and the head positioned at the station including the test plate. The head may be actuated in the z-direction so that the tips leave an imprint in the upper surface of the test plate. The imprint of the tips on the test plate may then be analyzed using any of a variety of measurement techniques to determine head framing alignment or misalignment.

Abstract: A system is disclosed for measuring head framing and tip straightness in a liquid handler. The present system uses a test plate, having an upper surface formed of clay or other impressionable material. The test plate may be placed at a liquid handling station. Pipette tips may then be loaded onto the head, and the head positioned at the station including the test plate. The head may be actuated in the z-direction so that he tips leave an imprint in the upper surface of the test plate. The imprint of the tips on the test plate may then be analyzed using any of a variety of measurement techniques to determine head framing alignment or misalignment.

Abstract: Improved labels are disclosed for containers of the type defined at least in part by at least one sidewall having an outer surface. The outer surface has at least one label thereon, the label comprising a first writing surface defined by a plurality of individual writing areas arranged in an array characterized in that adjacent writing areas are at least substantially isolated from each other by an intermediate space, and a second writing surface in the intermediate space. The second writing surface is vertically recessed relative to the first writing surface.