Profile: Bioptechs, Inc. offers live cell microscopy environmental control systems. We are an optical engineering company that designs, develops and manufactures live-cell microscopy environmental control instrumentation for qualitative and or quantitative light microscopy. Our products are dedicated to the science of live-cell microscopy and include imaging systems, micro-observation environmental control instruments, perfusion pumps, biocompatible tubing for cell culture, specialized fittings and adapters, as well as numerous supplemental items. The micro-perfusion pump is a miniature, single or dual channel, full-featured peristaltic pump designed specifically for low-flow rates. Unlike most peristaltic pumps that are driven by stepper motors, the micro-perfusion pump is driven by a tachometer regulated, multi-stage DC gear motor. This assures a smooth analog rotation of the roller spindle, free of instantaneous steps. It is regulated by either the internal control circuitry adjustable from 0.2-550 ml/hr (dependent on pump), or it can be interfaced with a computer through a USB D/A port. We provide a kit for this purpose that includes all cabling, software, and hardware needed for a dual pump setup. The pump comes with an external 9 volt AC adapter, and also contains an internal 9 volt battery which can function as the primary power supply if needed.