Biotrate - Premium digital burette for convenient titration Extremely high chemical resistance Smooth and light to operate with soft touch operating wheels Media recirculation system that allows unused media to be recovered from the device and returned to the bottle 360° rotating dispensing head Universal connector at the back of the unit for drying tubes and filters Easy to attach aspiration tube with a secure threaded connection User replaceable valves Supplied with UV-protected replacement window for light sensitive media protection Long life CR2032 battery Easy custom adjustment for various liquids Wide range of accessories Autoclavable liquid pathway Wide range of adapters included to fit most common bottle sizes