Motor City Wash Works Exclusive 3.1oz/minute digital metering pump displays milliliters, strokes per minute, and % of pump capacity. Accurately doses from 0.1ml to 100ml per minute. Designed with Viton seals and O-Rings for the broadest range of chemical applications. Pump head may be rotated in (3) 90-degree rotations to accommodate various mounting situations. Pump can be calibrated to be used with a wide range of chemical viscosity. Operating range of 110VAC to 220VAC, 50 or 60 Hz.