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LAB EQUIPMENT REPAIRS, INCLUDING ULTRALOW FREEZERS, FRIDGES, CENTRIFUGES AND MORE - Click here for details
LAB EQUIPMENT REPAIRS, INCLUDING ULTRALOW FREEZERS, FRIDGES, CENTRIFUGES AND MORE - Click here for details
Pumps/Dispensers

Pumps/Dispensers

American Instrument Exchange offers used and refurbished laboratory pumps and dispensers for sale, designed for precise fluid handling, liquid transfer, dosing, and vacuum applications in scientific, pharmaceutical, clinical, and industrial laboratory environments. Our inventory includes peristaltic pumps, vacuum pumps, diaphragm pumps, syringe pumps, bottle-top dispensers, and laboratory fluid handling systems from trusted manufacturers including Masterflex, Welch, KNF, Gilson, and Cole-Parmer.

Laboratories use pumps and dispensers for a wide range of applications including sample transfer, media dispensing, vacuum filtration, chromatography support, solvent handling, chemical dosing, and analytical instrumentation workflows. When selecting a laboratory pump or dispenser, buyers should consider flow rate range, chemical compatibility, vacuum performance, dispensing accuracy, tubing configuration, and compatibility with laboratory workflow requirements. Choosing the correct fluid handling equipment can improve process consistency, laboratory efficiency, and analytical reliability.

American Instrument Exchange has extensive experience refurbishing laboratory equipment, including fluid transfer systems, vacuum pumps, and laboratory dispensers. Our technicians inspect and test each unit to verify motor performance, vacuum integrity, flow control accuracy, controller functionality, and overall operational reliability prior to shipment. All pumps are cleaned, serviced, and evaluated to help ensure dependable performance upon installation at your facility.

Our inventory includes peristaltic pumps for gentle fluid transfer, vacuum pumps for filtration and evaporation applications, syringe pumps for controlled dispensing, and bottle-top dispensers for accurate reagent handling. These systems are commonly used in life science laboratories, pharmaceutical research facilities, biotechnology companies, chemical laboratories, environmental testing facilities, and industrial quality control environments.

Browse our selection of used laboratory pumps and dispensers for sale to find reliable fluid handling equipment at competitive prices. Specifications are provided to assist with laboratory planning, application compatibility, and installation requirements.

Original price $750.00 - Original price $750.00
Original price
$750.00
$750.00 - $750.00
Current price $750.00

Watson Marlow 503S peristaltic

Watson Marlow
In stock

Watson Marlow 503S peristaltic pump with standard variable speed drive Digital speed setting Reversing switch Flow rate .3 micro liter/min to 1700...

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Original price $750.00 - Original price $750.00
Original price
$750.00
$750.00 - $750.00
Current price $750.00
Original price $1,375.00 - Original price $1,375.00
Original price
$1,375.00
$1,375.00 - $1,375.00
Current price $1,375.00

Watson Marlow 505U peristaltic

Watson Marlow
Low stock

Watson Marlow 505U microprocessor control peristaltic pump with 501 RL head 220 RPM maximum speed 90-day warranty This pump is used and reconditi...

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Original price $1,375.00 - Original price $1,375.00
Original price
$1,375.00
$1,375.00 - $1,375.00
Current price $1,375.00
Original price $1,990.00 - Original price $1,990.00
Original price
$1,990.00
$1,990.00 - $1,990.00
Current price $1,990.00

Watson Marlow 604U pump

Watson Marlow
Low stock

Watson Marlow 604U peristaltic pump Maximum rotation speed: 165rpm Flow rate of up to 2.9 gpm 90-day warranty This pump is used and reconditione...

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Original price $1,990.00 - Original price $1,990.00
Original price
$1,990.00
$1,990.00 - $1,990.00
Current price $1,990.00
Original price $1,550.00 - Original price $1,550.00
Original price
$1,550.00
$1,550.00 - $1,550.00
Current price $1,550.00

Watson Marlow 701 S/R peristaltic pump

Watson Marlow
Low stock

Watson Marlow 701 S/R peristaltic pump The Watson Marlow 701 S/R peristaltic pump is a manual control high-flow pump designed for various applicati...

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Original price $1,550.00 - Original price $1,550.00
Original price
$1,550.00
$1,550.00 - $1,550.00
Current price $1,550.00
Original price $790.00 - Original price $790.00
Original price
$790.00
$790.00 - $790.00
Current price $790.00

Watson Marlow TPM peristaltic

Watson Marlow
Low stock

Watson Marlow TPM Pro peristaltic pump Variable speed to 220 rpm 5-line head 90-day warranty This pump is used and reconditioned. Our technicians...

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Original price $790.00 - Original price $790.00
Original price
$790.00
$790.00 - $790.00
Current price $790.00
Original price $1,200.00 - Original price $1,200.00
Original price
$1,200.00
$1,200.00 - $1,200.00
Current price $1,200.00

Wheaton Unispense uP dispenser

Wheaton
Low stock

Wheaton UniSpense uP Dispenser The Wheaton UniSpense uP Dispenser offers precise and efficient liquid dispensing using a reliable peristaltic pumpi...

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Original price $1,200.00 - Original price $1,200.00
Original price
$1,200.00
$1,200.00 - $1,200.00
Current price $1,200.00
Original price $495.00 - Original price $495.00
Original price
$495.00
$495.00 - $495.00
Current price $495.00

WM 313S Peristaltic Pump

Watson Marlow
Low stock

Watson Marlow 313S peristaltic pump 90-day warranty The Watson Marlow 313S is fast-loading and easy to use with a flip-top design. It attach...

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Original price $495.00 - Original price $495.00
Original price
$495.00
$495.00 - $495.00
Current price $495.00
Original price $3,200.00 - Original price $3,200.00
Original price
$3,200.00
$3,200.00 - $3,200.00
Current price $3,200.00

Atlas Corpco Oil Free Scroll Air Compressor SF4FF

American Instrument Exchange
In stock

Atlas Corpco Oil Free Scroll Air Compressor The Atlas Corpco Oil Free Scroll Air Compressor SF4FF is a high-performance, oil-free scroll compressor...

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Original price $3,200.00 - Original price $3,200.00
Original price
$3,200.00
$3,200.00 - $3,200.00
Current price $3,200.00
Original price $8,500.00 - Original price $8,500.00
Original price
$8,500.00
$8,500.00 - $8,500.00
Current price $8,500.00

Thermo MultiDrop Combi Reagent Dispenser

Thermo
In stock

Thermo Scientific Multidrop Combi Reagent Dispenser - Type 836 Ideal for demanding pharmaceutical and biotech laboratories, this high-speed dispe...

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Original price $8,500.00 - Original price $8,500.00
Original price
$8,500.00
$8,500.00 - $8,500.00
Current price $8,500.00
Original price $4,200.00 - Original price $4,200.00
Original price
$4,200.00
$4,200.00 - $4,200.00
Current price $4,200.00

Watson Marlow 730UN process pump

Watson Marlow
In stock

Watson Marlow 730UN process pump The Watson Marlow 730UN process pump has a max flow rate of 3300 L/h and a minimum flow rate of 0.12 L/h. This uni...

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Original price $4,200.00 - Original price $4,200.00
Original price
$4,200.00
$4,200.00 - $4,200.00
Current price $4,200.00