Harvard Apparatus PHD Ultra Syringe Pump - Infusion Withdrawl

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Harvard Apparatus
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The Harvard Apparatus PHD Ultra Syringe Pump handles both infuse and withdraw and provides high accuracy for flexible use in mass spectroscopy, calibration, drug and nutritional infusions, microdialysis, dispensing, chromatography and LC/HPLC. This microprocessor controlled syringe pump features an easy to navigate full color touch screen that displays operation in real time with onscreen graphics. This infusion pump also comes with preprogrammed methods.  The small step angle stepping motor of the PHD Ultra, drives a lead screw and pusher block, with a step rate range of 26 µsec to 27 sec per µstep, to eliminate flow pulsation. This infusion withdrawl pump has a flow rate between 1.56 pl/min- 216 ml/min depending on the syringe with a flow accuracy of 0.35% and reproducibility within 0.05%. The accompanying software for the PHD Ultra allows users to select from common syringe models, input custom specifications, calculate cross-sectional areas, and calibrate the flow rate and volume accumulation.

Harvard Apparatus PHD Ultra Syringe Pump Specifications: 

Pump Function

Infuse/Withdraw, Programmable



Drive Motor

0.9° Stepper Motor

Flow Rate Maximum

216 ml/min using 140 ml syringe

Flow Rate Minimum

1.56 pl/min using 0.5 µl syringe

Pusher Travel Rate Maximum

190.8 mm/min

Pusher Travel Rate Minimum

0.18 µm/min

Step Rate Maximum

26 µsec/µstep

Step Rate Minimum

27.5 sec/µstep

Max Linear Force

75 lbs @ 100% Force Selection

Mode of Operation


No of Syringes


Syringe Size Maximum

140 ml

Syringe Size Minimum

0.5 µl

Number of Microsteps per one rev of Lead Screw


Environmental Humidity

20% to 80% RH, non condensing

Environmental Operating Temperature English

40°F to 104°F/4°C to 40°C

Dimensions Control Box LxDxH in cm

12.0 x 8.5 x 7.25 (30.48 x 21.59 x 18.42)


11 lbs


100-240 VAC, 50/60 Hz 50 W, 0.5 A fuse


  • Harvard Apparatus PHD Ultra Syringe Pump Infusion Withdrawl 70-3007
  • Touch Screen
  • 115V Power Cord
  • Operator's Guide
  • 30-Day Warranty

This Harvard Apparatus PHD Ultra Syringe Pump has been fully inspected and is performing as expected. All of our lab equipment comes backed with our standard warranty. Should you have any questions, please don't hesitate to contact us.

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