Abstract: A multi-chambered pump-valve device for performing chemical processes, detections or analyses is described herein. The device includes a plurality of chambers having variable volumes in fluid communication with one another via one or more passageways. Liquid may be directed through the device by merely changing the volumes of two or more chambers. Despite the simplicity of the mode for transferring liquids in the device, complex chemical processing sequences may be performed using the device. A plurality of devices may be incorporated into a larger apparatus so that a plurality of chemical processing operations may be performed substantially simultaneously in parallel.

Abstract: The present invention provides a device, system and method for desiccation of liquid samples. The device includes multiple concentration chambers, each having a gas inlet and a gas vent. Methods of using the device to desiccate multiple liquid samples also are provided. The device may be assembled with a processing device to form a module. Such modules may be assembled to form a system designed, e.g., to provide automated chemical analyses of liquid samples. The system is particularly useful for modular, high-throughput chemical processing, especially in the fields of genomics and proteomics.

Abstract: An adhesive backed measuring tape is disclosed that can provide customized, printed measurement scales on a single flexible backing that has a positionable or repositionable adhesive for contact with flat surfaces, single curved surfaces, or compound curved surfaces. In a preferred embodiment, the measuring tape has multiple scales printed thereon. The combination of linear sections and transverse axes defined by intervals can permit a variety of repeating scales on a single tape, minimizing waste of tape unrolled from a dispenser.

Abstract: The present invention provides methods and apparatus for maintaining substantially constant vertical distance between the free surface of a printing fluid in a fluid supply and printing mechanism by supporting a container against the force of gravity with a resilient member.

Abstract: A method and apparatus to reduce fogging on electrostatic printing media is disclosed. A negative bias is applied to toning station(s) or vacuum station(s) of the printing apparatus with isolation of that negative bias from the printing media.