Laboratory Pumps: A Guide to Dispensing Pumps

Dispensing pumps distribute precise volumes of a liquid within a specified time interval. Here are descriptions of various dispensing pumps, from gear pumps to syringe pumps:

Bellows Pumps move a bellows back and forth to displace liquid. Special nonclogging valves are available for abrasive or particulate applications

Diaphragm Pumps pulse a flexible membrane to displace liquid with each stroke. There are no seals so abrasives and slurries can be pumped if valves are kept clean to keep the ball checks functioning properly

Drum Batch-Control Pump Systems are engineered to control, measure, and dispense or batch transfer preset volumes of fluids from drums, tanks, and storage containers. Various wetted materials accommodate a wide range of transfer fluids. These systems can easily be moved from location to location to quickly meet your needs

Filler Pumps provide a benchtop system that quickly and accurately fills a large number of vessels. These systems are ideal for repetitive dispensing applications

Gear Pumps offer pulseless flow at moderate to high pressures. Each rotation of the gears dispenses an exact known amount of fluid. These are available in both mechanical seal and sealless magnetic drive versions

Ismatec® Peristaltic Pumps offer flow rates down to 0.0007 mL/min

MultichannelDispensingPumpMasterflex® Peristaltic Pumps include four product families—C/L® (compact pumps with a flow range of 0.002 to 43 mL/min), L/S® (benchtop and modular versions with a flow range of 0.00001 to 3400 mL/min), I/P (industrial–sized pumps with flow ranges from 0.012 to 26 LPM), and B/T® (largest with flow ranges from 0.3 to 42 LPM). The L/S and I/P let you use the same drive for multiple pump heads, resulting in a greater stretch of your investment. With more than 20 pump tubing formulations in multiple sizes, Masterflex has practically all applications covered

Microplate Dispensing Systems are high throughput systems that offer flexible dispensing patterns for single and dual microplate applications. Dispense 100 μL in 96 wells in less than 14 seconds

Peristaltic Pumps are designed so that the only material in contact with the fluid being pumped is the tubing, for contamination-free dispensing. Options available for single or multi-channel dispensing

Piston Pumps use a reciprocating plunger to move liquid through the pump. These pumps are ideal for higher pressure systems that hold particulate-free fluids. Ideal for high pressure, high accuracy applications such as HPLC

Progressing Cavity Pumps are excellent at offering a pulseless flow with low shear to the pumping medium. By offering a wide range of wetted materials (pump body, rotor, stator), the pumps can accommodate many different solutions

Rotary Lobe Pump Systems include a liquid end, motor/drive and an integrated VFD resulting in a configuration that lets you easily manipulate flows to meet system requirements. Pumps can easily move fluids with viscosities up to 10,000 cps. The pumps are designed to be CIP (clean in place) and SIP (steam in place) to easily meet your cleaning requirements by not having to breakdown the pumps

Syringe Pumps are high-accuracy pumps that either draw in or push out liquid through a syringe to obtain a known volume as determined by the size of the syringe. Up to ten syringes can be used on one pump. Pumps vary by either nanoliter flow or high-pressure precise injections

View our selection of Dispensing Pumps.

1 Comment on "Laboratory Pumps: A Guide to Dispensing Pumps"

  1. Thanks for the nice article! Bellows pumps eliminate conventional throat seals, providing high reliability and low maintenance.

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