WATER SAMPLER Designed for field or lab use, Geopump Peristaltic Pumps offer single-stage pressure or vacuum pumping of liquids to depths of 27 feet (at sea level). They are ideally suited for sample removal from shallow wells and surface water sources. They operate by mechanical peristalsis, so the sample comes in contact only with the tubing. This allows for sample integrity as well as easy cleaning and replacement. With the optional stainless steel tubing weight, tubing can be lowered to a specific depth without curling or floating on the surface of the water. Series I Geopump Peristaltic Pumps are available in AC only, DC only, or an AC/DC combination. These units have one pumping station which can be piggybacked for multi-station pumping. They have variable speeds ranging from 60 RPM to 350 RPM. Series II Geopump Peristaltic Pumps are available in AC only, DC only, or an AC/DC combination. They have two pumping stations which can also be piggy-backed for multi-station pumping. The first pumping station has a variable speed of 30 to 300 RPM and the second station 60 to 600 RPM. Features : Exceptional field durability Variable speed control with reversible flow feature for back-flushing Disposable and dedicated tubing means controlled costs and no decontamination issues. Includes : Geopump peristaltic pump Set of power cord(s) Easy-Load II pump head 5′ length of size 15 tubing Operations manual.