Peristaltic Pumps
Laboratory Peristaltic Pumps: Flow Rate, Pump Head and Tubing
A peristaltic pump moves liquid by squeezing tubing rather than with an impeller in contact with the fluid. The liquid only touches the inside of the tube, which is why these pumps are used for corrosive, sterile or expensive solutions that must not be contaminated.
- Fluid never touches the pumponly the tube interior
- Adjustable flowvia rpm, head and tubing
- 4 units deliveredBT100J-1A with YZ15 head
- Tubing is consumablebudget routine replacement
When a peristaltic pump is the right choice
- Corrosive or reactive liquids that would damage the internals of a conventional pump, such as acids, strong bases and electrolyte solutions.
- Processes that must be sterile or free of cross-contamination: cell culture, microbiology media and clinical samples.
- Constant-rate feeding of reactors, flow electrolysis, chromatography columns and membrane filtration systems.
- Liquids carrying particles or of high viscosity, which easily clog impeller pumps.
- Small doses that must be accurate and repeatable, because flow is proportional to rotation speed.
Specifying a peristaltic pump
- Start from the flow you needWrite down the minimum and maximum flow of your process. The flow of a peristaltic pump comes from the combination of drive speed, pump head and tube inner diameter - not from a single number on the pump body.
- Choose the pump headThe head decides which tube sizes fit and how many channels you get. A large head such as the YZ15 takes bigger-bore tubing for high flow; a multi-channel head runs several lines at once from one drive.
- Match the tubing to the fluidThis is the part most often got wrong. Silicone is cheap and flexible but resists few organic solvents; fluoropolymers resist chemicals but are stiffer with a different fatigue life.
- Account for pulsationPeristaltic flow pulses with each roller. If your process demands smooth flow, use a head with more rollers or add a pulsation damper.
- Budget tubing as a consumableTubing fatigues from constant squeezing and must be replaced periodically. Include annual tubing cost when comparing pump prices.
Pumps available
| Model | Best for | Price | Purchase |
|---|---|---|---|
| BT100J-1A peristaltic pump with YZ15 head | A laboratory drive with a large tube head; four units already delivered | on request | Request quote |
| Infitek VACP-D31 diaphragm vacuum pump | When what you need is vacuum suction rather than liquid transfer | Rp 11.981.430 | Buy online |
| Joan Lab VP-6L mini vacuum pump | Compact vacuum for bench-top filtration | Rp 3.030.000 | Buy online |
Store catalogue prices before 11% VAT and shipping; subject to change. Stock and delivery time are confirmed in the quotation.
Frequently asked questions
What is the maximum flow of a peristaltic pump?
There is no single universal figure: flow is the product of speed, volume per roller and tube inner diameter. The same laboratory pump can deliver a few millilitres per minute up to several litres per minute simply by changing the head and tubing. Tell us the flow you need and we will match the configuration.
Can a peristaltic pump handle strong acids?
Yes, provided the tubing material resists them. Because the liquid only touches the tube, chemical resistance is decided entirely by the tubing choice, not the pump body.
How is flow kept accurate?
Recalibrate by weighing the output per unit time after every tubing change, and record the speed used. Fatigued tubing delivers less flow at the same speed.
Can it be used for flow electrochemistry?
Yes, peristaltic pumps are a common choice for circulating electrolyte in flow cells. See the electrochemistry guide for the cell and potentiostat setup.
Need help choosing a specification?
Tell us about your samples, working temperature or test method. Our team will match the right model and send a formal quotation with an estimated delivery time.
