How to Select your Masterflex Pump System

Define your application requirements.

  • What flow rate do I need?
  • What chemical am I pumping?
  • Do conditions like fluid viscosity or back pressure play an important role in my application?

Select a pump series based on your flow rate.

  • Masterflex Ismatec®0.002 to 37 mL/min
  • Masterflex L/S® 0.0006 to 3400 mL/min
  • Masterflex I/P® 0.012 to 13 LPM
  • Masterflex B/T® 0.3 to 45 LPM

Select the components to fit your application.

  • I/P and L/S pumps systems are divided into three categories: pump head, tubing, and drive.
  • Masterflex Ismatec and B/T pumps systems are divided into two categories: pump head and drive.
  • To complete your tubing pump system, choose a pump head, tubing, and drive from within the same series.

What to consider when choosing a pump head

  • Flow rate — Different pump heads have different flow rate capabilities.
  • Frequency of tubing changes — Some pump heads enable very rapid tubing changes.
  • Desired number of channels — Pump heads are stackable in most cases.
  • Chemical compatibility — If chemicals spill, the pump head materials become important. See our chemical compatibility table.
  • Accuracy — Standard pump heads deliver the most accurate and repeatable flow rates.

What to consider when choosing tubing

  • You can visit our STAMP tubing selection guide or for a quick overview:
  • Size — Inner and outer diameter of the tubing determine flow range, maximum pressure, and ability to handle viscous fluids well.
  • Temperature — Higher fluid or environmental temperatures will decrease tubing life. SoOmetimes a layered tube will alleviate these concerns.
  • Application — Special considerations for your application of industry such as adherence to federal or other regulations such as FDA 21 cfr 177.2600 and USP Class VI, soft or hard particulates, or high viscosities are some examples.
  • Media — Which formulation is least effected by your fluid’s chemical nature? Check out our Chemical Compatibility guide Database to help you find out.
  • Pressure — Higher pressures can result in decreased pump tubing life and increased possibility of rupture. This can be mitigated with thicker tube walls in conjunction with a pump head architecture that supports those pressure ranges. Additionally, tube or barb locks to fit over tubing connectors will help reduce the risk of rupture at those points.

What to consider when choosing a drive

  • Flow rate — The rpm of the drive directly correlates to flow rate.
  • Fixed- or variable-speed — Variable-speed drives enable flow rate adjustment.
  • Accuracy of flow rate or dispense volume — Many drives have digital speed control circuitry for highly accurate and repeatable flow rates.
  • Remote control via analog signal or cloud — Some drives can connect to your process controller or can be operated by a footswitch while others can be safely monitored or controlled by phone or webpage using the cloud.
  • Environmental protection against hazards — Many drives are sealed against dust and water exposure.

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