Cole-Parmer® Watson-Marlow Variable-Speed Peristaltic Pump System

The Watson-Marlow Variable-Speed Pump System is a compact, benchtop peristaltic pump designed to deliver exceptional accuracy, repeatability, and ease of use for laboratory and industrial fluid handling applications. Its space-saving design, intuitive digital controls, and maintenance-free motor make it ideal for precise dosing, transfer, and metering of a wide range of fluids.

This peristaltic pump operates from 1 to 200 rpm in precise 1 rpm increments, providing flow rates from 0.001 to 120 mL/min or 0.002 to 190 mL/min, depending on tubing size and pump head configuration. The MAX key enables rapid priming, while forward/reverse controls simplify fluid transfer tasks.

Peristaltic pumps maintain fluid integrity by ensuring that only the tubing bore contacts the fluid, eliminating cross-contamination risks. This pump is suitable for:

• Viscous fluids
• Shear-sensitive fluids
• Corrosive or abrasive liquids

Included Components

• Single-channel, four-roller pump head (EW-50130-00 Only)
• Single-channel, four-roller flip-top pump head (EW-50130-01 Only)
• 24 VDC power supply with multi-country plug adapter 

Main Attributes

• Compact, stackable design minimizes benchtop space requirements
• Simple keypad operation with minimal key presses
• Digital LCD display for clear speed control and monitoring
• Keypad lock function prevents accidental setting changes
• Auto-start feature ensures automatic restart after power loss
• Smooth IP31-rated housing allows for easy cleaning and wipe-down
• Brushless, maintenance-free motor with ±1% speed control accuracy
• 200:1 speed control ratio for precise flow adjustment
• 3-year manufacturer warranty 

Pump Head Information
 

Four-roller pump head (EW-50130-00)

• Accepts tubing with:
• Bore sizes: 0.5 to 4.0 mm
• Wall thickness: 1.6 mm
• Pump head is constructed of acetal roller assembly, aluminum rotor assembly, aluminum track, and stainless steel hardware

Flip-top pump head (EW 50130 01)

• Accepts tubing with:
• Bore sizes: 0.5 to 4.8 mm
• Wall thickness: 1.6 mm
• Pump head is constructed of Grilamid® PA12, IXEF PARA, PTFE-filled PBT roller assembly, and stainless steel hardware 

*Flow rate depends on drive rpm, pump head, and tubing size.

*Warning: This product is not approved or intended for, and should not be used for, medical, clinical, surgical, or other patient-oriented applications.