Used Lab Equipment

Used Lab Equipment

We typically have used and reconditioned pumps in stock from leading manufacturers like Cole-Palmer and Watson/Marlow.

Peristaltic Pump: 31-45 of 198

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Agilent 1260 Series - G1310B HPLC Isocratic Pump

Agilent 1260 Series - G1310B HPLC Isocratic Pump

Cambridge Scientific ID #'s: 20799, 17964

The Agilent Technologies 1200 Series (G1310B) 1260 Infinity Isocratic Pump is a HPLC workhorse for demanding QA/QC and routine applications, designed to provide virtually pulse-free and stable solvent flow. This delivery principle allows variable stroke volume optimized to selected flow rate. The broadened pressure range with maximum pressure of 600 bar allows the use of small particle size columns, longer columns, or alternative solvents of higher viscosity. Additionally, the G1310B is the ideal pump for GPC/SEC applications where run-to-run and day-to-day precision of retention times are important.

 

Specifications:

  • Settable flow range: set points 0.001 - 5 mL/min, in 0.001 mL/min increments
  • Flow range: 0.2 to 10.0 mL/min
  • Flow precision: ≤ 0.07 % RSD or ≤ 0.02 min SD
  • Flow accuracy: ± 1 % or 10 μL/min whatever is greater, pumping degassed H2O at 10 MPa (100 bar)
  • Pressure operating range:
    • Operating range up to 60 MPa (600 bar, 8700 psi) up to 5 mL/min
    • Operating range up to 20 MPa (200 bar, 2950 psi) up to 10 mL/min
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Agilent 1260 Series - G1311B HPLC Quaternary Pump

Agilent 1260 Series - G1311B HPLC Quaternary Pump

Cambridge ID #: 20561

1260 Infinity - G1311B 

The quaternary pump comprises an optional solvent cabinet, a vacuum degasser

 and a four- channel gradient pump. The four- channel gradient 

pump comprises a high- speed proportioning valve and a pump assembly. 

It provides gradient generation by low pressure mixing. A solvent cabinet 

provides enough space for four one- liter bottles. An active seal wash 

(optional) is available when the quaternary pump is used with 

concentrated buffer solution 

Specifications:  

  • Hydraulic System: Dual piston in series pump with servo-controlled variable stroke drive, 
  • power transmission by gears and ball screws, floating pistons 
  • Setable Flow Range: Set points 0.001 – 10 mL/min, in 0.001 mL/min increments 
  • Flow Range: 0.2 – 10.0 mL/min 
  • Flow Precision: ≤ 0.07 % RSD, or ≤ 0.02 min SD whatever is greater, based on retention time at constant room temperature 
  • Flow Accuracy: ±1 % or 10 µL/min whatever is greater, pumping degassed H2O at 10 MPa (100 bar) 
  • Pressure Operating Range: Operating range up to 60 MPa (600 bar, 8700 psi) up to 5 mL/min, Operating range up to 20 MPa (200 bar, 2950 psi) up to 10 mL/min 
  • Pressure Pulsation: < 2 % amplitude (typically < 1.3 %), or < 0.3 MPa (3 bar), whatever is greater, at 1 mL/min isopropanol, at all pressures > 1 MPa (10 bar,147 psi) 
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Agilent 1260 Series - G1312B HPLC Binary Pump

Agilent 1260 Series - G1312B HPLC Binary Pump

Cambridge ID #: 20402

Specifications:

  • Hydraulic system: Two dual piston in series pumps with proprietary servo-controlled variable stroke drive, floating piston design and active inlet valve
  • Setable flow range: Setpoints 0.001 - 5 ml/min, in 0.001 ml/min increments
  • Flow range 1 - 5.0 ml/min
  • Flow precision: < 0.3 % RSD (typically 0.15 %), based on retention time, at 1 ml/min
  • Pressure: Operating range 0 400 bar (0 - 5880 psi) up to 5 ml/min
  • Pressure pulsation: < 2 %amplitude (typically < 1 %), at 1 ml/min isopropanol, at all pressures > 1 MPa
  • Compressibility compensation: User-selectable, based on mobile phase compressibility
  • Recommended pH range: 0 - 12.5, solvents with pH < 2.3 should not contain acids which attack stainless steel
  • Gradient formation: High-pressure binary mixing, delay volume 180 - 480 μl without mixer, 600 - 900 μl with mixer, dependent on back pressure
  • Composition range 1- 99 % or 5 μl/min per channel, whatever is greater
  • Composition precision < 0.2 % SD, at 0.1 and 1 ml/min
  • Control and data evaluation Agilent ChemStation for LC Control and data evaluation

 

Can be sold as an individual component or as part of a complete stack

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Agilent 1290 Series - G4220A HPLC Binary Pump

Agilent 1290 Series - G4220A HPLC Binary Pump

Cambridge ID #: 20796

Features:

The Binary pump is designed for highest performance, GLP compliance and easy maintenance.

It includes the following features:

• Seal wash for continued high lifetime of pump seals for buffer applications.

• Solvent selection valve for method flexibility.

• Jet Weaver for optimum mixing performance with a minimum of delay volume.

• Automatic purge function for ease of use and unattended preparation of the system.

• Auto tuning of the delivery cycle for compensation of elasticity and solvent volume change effects (compressibility, thermal expansion, mixing contraction).

• Solvent selection for optimum flow and composition accuracy.

• Fast defill function for improved intake and delivery performance.

• Two pistons in series design for increased reliability.

• High resolution piston movement control for smooth and reliable motion.

Specifications:

  • Hydraulic system: Two dual pistons in series pumps with proprietary servo-controlled variable stroke design, power transmission by ball screws, smooth motion control of pistons for active damping.
  • Settable flow range:  Setpoints 0.001—5 ml/min, in 0.001 ml/min increments.
  • Flow precision: ≤0.07 % RSD or 0.005 min SD, whatever is greater (0.2—5.0 ml/min).
  • Flow accuracy:  ±1 % or 10 µl/min, whatever is greater.
  • Pressure operating range: Operating range up to 120 MPa (1200 bar), up to 2 ml/min, 80 MPa (800 bar) at 5 ml/min.
  • Pressure pulsation:  <1% amplitude or < 0.5 MPa (5 bar), whatever is greater.
  • Compressibility compensation: Automatic, pre-defined, based on mobile phase selection.
  • Gradient formation: High pressure binary mixing
  • Delay volume: 
    • Jet Weaver V35: <45 µl
    • Jet Weaver V100: <75 µl
  • Composition range Settable range: 0 - 100 %
  • Composition precision: <0.15 % RSD, or 0.01 min SD, whatever is greater
  • Composition accuracy: ±0.35 % absolute (5 – 95 %, 0.2 – 5.0 ml/min)
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Welch 1400N Vacuum Pump

Welch 1400N Vacuum Pump

Cambridge ID #: 14860

Specifications:

  • Pumping Speed Displacement: 0.9 CFM
  • Hertz: 50/60 Hz
  • Voltage: 115/220
  • Oil capacity: 0.62 qt.
  • Weight: 58 lbs.
  • Dimensions LxWxH: 18x9x13 in.
  • Intake: 3/4-20
  • Outtake: 3/4-20
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Welch 1402 Vacuum Pump

Welch 1402 Vacuum Pump

Cambridge ID #: 11804

DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These rotary vane pumps have large oil reservoirs to dilute contaminants. Low pump rpm to reduces friction and wear while minimizing reservoir temperature to lessen chemical reactivity. Pump can be ordered with an optional exhaust filter to control oil mist.

Specifications:

  • Free Air Displacement cfm (l/min.) @60Hz: 5.6(160)
  • Ultimate Pressure: 1 x 10-4(0.00013)
  • Pump RPM: 525
  • Oil Capacity: 2.25(2.1)
  • Motor Horsepower (watts): 1/2(370)
  • Overall Dimensions LxWxH in. (cm):  20x12x15 (51x30.5x60)
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Welch 1402B-01 Duoseal Vacuum Pump

Welch 1402B-01 Duoseal Vacuum Pump

Cambridge ID #: 11271

DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These rotary vane pumps have large oil reservoirs to dilute contaminants. Low pump rpm to reduces friction and wear while minimizing reservoir temperature to lessen chemical reactivity. Pump can be ordered with an optional exhaust filter to control oil mist.

Specifications:

  • Free Air Displacement cfm (l/min.) @60Hz: 5.6(160)
  • Ultimate Pressure: 1 x 10-4(0.00013)
  • Pump RPM: 525
  • Oil Capacity: 2.25(2.1)
  • Motor Horsepower (watts): 1/2(370)
  • Overall Dimensions LxWxH in. (cm):  20x12x15 (51x30.5x60)
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Waters 1525 HPLC Pump

Waters 1525 HPLC Pump

Cambridge ID #: 22188

The 1525 and 1525 with EF heads are integrated, high-pressure, binary HPLC pumps that feature on-board pulse dampening and efficient mixing. Their pulse-free solvent flow, from analytical to semi-preparative flow rates, makes them ideal for use with highly sensitive detectors.

Designed for use with 2 to 4.6 mm I.D. columns in routine LC and LC/MS applications, these pumps have a programmable flow-rate range of 0.00 to 10.00 mL/min in 0.01 mL increments.

Optional features:

  • Extended Flow (EF) heads for extended flow rate range up to 22.50 mL/min for use with 10 to 19 mm I.D. columns
  • 1500 Series Column Heater with a temperature range of 20 to 60 °C to maintain accurate, consistent column temperature
  • Integral vacuum degasser to remove dissolved gases from the mobile phase, improving performance and reliability
  • Automated seal wash helps extend the primary seal life for reliable operation
  • FlexInject manual dual injector module for both analytical and semi-preparative injections
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Edwards 18 Vacuum Pump

Edwards 18 Vacuum Pump

Cambridge ID #: 19313

Features:

The EM range of oil-sealed rotary pumps is renowned for their high ultimate vacuum, rapid pumping speed, quiet operation and the ability to withstand vapour. They are commonly used for laboratory and light industrial applications. It is a freestanding instrument with the drive provided through a flexible coupling by either a single phase or three phase motor.

 

Specifications:

  • Displacement:

 

                  50Hz: 20.5 m3h-1 /12.1 ft3min-1
                  60Hz: 25.0 m3h-1 /14.7 ft3min-1

 

  • Speed (Pneurop 6602):

 

                   50 Hz: 17.0 m3h-1 /10 ft3min-1
                   60Hz: 20.4 m3h-1 /12.1 ft3min-1

  • Ultimate vacuum (total pressure): 

                   without gas purge: 1 x 10-3 mbar /7.4 x 10-4 Torr
                   with gas purge: 1.5 x 10-1 mbar /1.1 x 10-2 Torr
                   with Fomblin: 1 x 10-2 mbar /7.5 x 10-3 Torr

  • Inlet connection: NW25
  • Outlet connection: Nozzle 15mm external Ø removable from 3/4 in BSP tapped hole
  • Max permitted pressure at outlet: 0.5 bar gauge /7 psig
  • Max inlet pressure for water vapour: 20 mbar / 15 Torr
  • Max water vapour pumping rate: 0.3 kg h-1
  • Operating temp range: 13-40°C
  • Nominal Rotation speed 50/60Hz: 1440 /1720 rpm
  • Power connector 1-ph: IEC EN 60320 C19
  • Motor power 50Hz: 0.55 kW
  • Motor power 60Hz: 0.75 kW
  • Noise at 50Hz: 57 dB(A)
  • Oil capacity max: 1.05 litre
  • Oil capacity min: 0.75 litre
  • Recommended oil: Ultragrade 19
  • Thermal overload device: prevents overheating (single phase only).
  • The drive is provided through a flexible coupling: by a single‑phase or three‑phase (four pole) motor.
  • The motors: are totally enclosed and are cooled by the motor cooling fan.
  • Full height O ring sealed oil sight glass: for easy checking of oil level and condition

 

 

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Pittsburgh Automotive 2.5 CFM - 98076 Vacuum Pump

Pittsburgh Automotive 2.5 CFM - 98076 Vacuum Pump

Cambridge ID #: 21339

Features:

Designed for deeper vacuum draw, this vacuum pump pulls vacuum down to 75 microns. Precision machined one-stage pump removes moisture from air conditioning systems to safely add refrigerant. This one stage vacuum pump is ideal for automotive air conditioning, HVAC work and other operations that require high vacuum pull from a compact pump.

  • One stage pump draws vacuum down to 75 micron
  • Durable die cast aluminum housing and convenient top handle for easy maneuvering
  • Easy-access oil fill port with viewing window for easy maintenance (oil included)
  • Dual ports for R134A and R12/R22 systems
  • Thermal and current overload protection

Specifications:

  • Capacity: 10 Pascal
  • AC Volts: 120
  • Flow rate: 2.5 CFM
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Welch 2025 Vacuum Pump

Welch 2025 Vacuum Pump

Cambridge Scientific ID #'s: 21267, 7633, 21261, 21310, 6352

Maintains efficiency and extends diaphragm life.

Specifications:

 

  • Free Air Displacement: 35 L/min
  • Max Pressure: 29.5 Pascal
  • Dimensions: 11.8 L x 8 W x 11 1/2 H (in)
  • Weight: 13.6 kg

 

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Welch 2026 Vacuum Pump

Welch 2026 Vacuum Pump

Cambridge Scientific ID #'s: 21337, 21338

Features:

Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes.

Specifications:

  • Pumping Speed: 35 l/min
  • Max. Vacuum: 2 torr
  • Tubing Needed: 1/4" ID
  • Exhaust ./ Intake threads: 3/8
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Waters 515 HPLC Pump

Waters 515 HPLC Pump

Cambridge Scientific ID #'s: 15098, 15100

The 515 HPLC pump is a programmable, free-standing HPLC pump available in isocratic, gradient, and semi-preparative configurations:

Features:

  • Precise stepper motor control (48 steps/µL resolution) of dual reciprocating pistons
  • Non-circular drive gears provide smooth, uniform eluent delivery
  • User-programmable flow rate calibration and compressibility compensation factors ensure straightforward pump operation qualification
  • Tests to retention time variations of less than 0.1% for highly reproducible peak performance
  • Easy-to-read display and keypad for error-free programming
  • Automatic purging and flow calibration

Specifications:

  • Flow rate precision 0.1%, accuracy 1%
  • Flow rate up to10.000 mL/min, in 0.001-mL/min increments
  • Maximum operating pressure: 6000 psi

 

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Welch 8917 Vacuum Pump

Welch 8917 Vacuum Pump

Cambridge ID #: 21502

Specifications:

  • Free air displacement: 138 L/min @ 50Hz
  • Normal pumping speed: 7.51 L/min @ 50Hz
  • Guaranteed ultimate pressure: 1x10-4torr
  • Sound level: 50 dBA
  • Motor/pump speed: 1425 RPM @ 50Hz
  • Motor horsepower: 0.5hp
  • Pump weight: 48lbs (22kg)

 

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Welch 8920A Vacuum PumpImage Coming Soon

Welch 8920A Vacuum Pump

Cambridge ID #: 18943

Description:

Refrigeration service pump is designed for removing air and moisture from industrial and commercial chillers. Pump includes a gas ballast valve that inhibits condensation reducing corrosion, an On/Off switch, 3-wire cord, and oil.

Specifications:

  • Displacement: 7.7 cfm
  • Ultimate Pressure Torr: 3 x 10-4
  • Intake Male SAE Flare: 3/4
  • NPT Inlet: 3/4"
  • Voltage: 115/230
  • Amps AC: 6.8/3.4
  • Dimensions (L x H x W): 20.5” x 10.75” x 7.125”
  • Hz: 60
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