Product Category Description:

These variable flow peristaltic pumps provide precise delivery. They are compact and ideal for applications in liquid chromatography, fraction collection, fluids/buffers circulation in baths, and corrosive material movement. Bidirectional, self-priming pumps provide outstanding flow control and flexibility for transferring and dosing liquids. Fluid contacts only the tubing for contamination-free pumping.

Flow rates range from 0.005 to 600mL/min. Variable speed flow control and five tubing sizes allow a wide flow range and fine resolution. Revolution of one roller delivers a precisely measured volume specific to the tubing size and motor speed.

Tubing can be used with fluids –62 to 260°C (–80 to 500°F). Tubing is autoclavable for use with food, pharmaceutical, and other critical solutions. Pumps liquid or gas, and pumping dry is not harmful to unit. The pump has a purge/prime switch for high speed emptying/filling. It also reverses at the touch of a switch for easy draining. Three rollers reduce flow pulsation, prevent siphoning, and eliminate the need for check valves. There are no valves to clog or seals to leak. Housed in a chemical-resistant ABS plastic case. For 115V operation.

Ordering Information: Pumps come ready-to-use and are supplied with silicone tubing (sizes 1/16", 3/32", 3/16", and 1/4" I.D.), polypropylene fittings/nipples, 115V wall power supply, and an accessory battery connector (9V battery not supplied). Replacement tubing and tubing sets available separately.

Specifications for VWR Pumps, Variable Flow 3389 :

Pump Type:		Medium-High Flow
Flow Rate, mL/min.:		4 to 600
Dimensions:		16.8L x 12H x 11.5D cm (65/8 x 43/4 x 41/2")
Shipping Weight:		0.57 kg (1.25 lbs.)

(Please note that the description and stock photo may not correspond to the specific model listed above)

We offer only genuine VWR products, authorized for sale in the U.S. and other markets, so you can be sure that you are buying authentic Laboratory Apparatus with a full manufacturer's warranty in addition to our own 100% Satisfaction Guarantee. We are your premier online distributor for VWR Laboratory Apparatus. We are an authorized supplier to all federal and state government agencies, as well as to research and educational institutions, and can facilitate volume orders on many types of laboratory equipment, lab consumables, and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over $29.95. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses.

In addition to the VWR Pumps, Variable Flow 3389/ 57951-016, we carry a full complement of Laboratory Apparatus as well as other product offerings from VWR. We also carry a full line of VWR accessories to help meet your laboratory and scientific needs.

For a complete selection of VWR Laboratory Apparatus, please visit our VWR page. For more brand name Laboratory Apparatus please visit our Laboratory Apparatus store section. To see our complete line of lab, medical, industrial, and scientific products, please see our science and lab equipment online catalog.