What is a peristaltic pump?

A peristaltic pump moves fluids by compressing and relaxing a flexible tube, creating a positive displacement. This design ensures the fluid only contacts the tubing, preventing contamination and making it ideal for sterile applications.

Is this pump suitable for viscous liquids?

Yes, peristaltic pumps are generally well-suited for handling viscous fluids as the pumping action is gentle and does not rely on valves or seals that can be affected by high viscosity.

Can this pump be used for continuous transfer or just dispensing?

While highly capable for precise dispensing, units of this type are also suitable for continuous fluid transfer, offering versatility across different operational needs.

What kind of maintenance does a peristaltic pump require?

Primary maintenance involves routine inspection and replacement of the peristaltic tubing, which is a wear part. Other components typically require minimal maintenance.

Are spare parts readily available for Watson Marlow pumps?

Watson Marlow is a well-established manufacturer, and spare parts, particularly tubing and pump heads, are generally widely available through their distribution network.

Home
/
Labs, Biotech & Pharma
/
Liquid Handling, Pumps & Fluid Control
/
Peristaltic Pumps
/
Watson Marlow 520Di Peristaltic Pump

Used Watson Marlow 520Di Peristaltic Pump - Peristaltic Pumps, photo 1

Used Watson Marlow 520Di Peristaltic Pump - Peristaltic Pumps, photo 2

Used Watson Marlow 520Di Peristaltic Pump - Peristaltic Pumps, photo 3

Used Watson Marlow 520Di Peristaltic Pump - Peristaltic Pumps

used Equipment

Available

Verified seller

Watson Marlow 520Di Peristaltic Pump

Name: Watson Marlow 520Di Peristaltic Pump
Brand: Watson Marlow
SKU: 31648/31647/31649/SR9B
Price: 750 GBP
Availability: InStock

Price: £ 750

This listing is for the Watson-Marlow 520Di Dispensing Pump.

The unit is in full working condition and is ready for immediate use.

Overview.

The 520Di is a high-precision, programmable peristaltic dispensing pump designed for aseptic fluid transfer and filling in pharmaceutical, biotech, and food processing environments.

With a simple keypad-screen interface and up to 50 programmable batch routines, it meets cGMP documentation needs while delivering fast and accurate fluid dispensing.

Dispenses 50 mL in 2 seconds with ±0.5% accuracy.

Pumps up to 3.5 L/min, pressures up to 2 bar.

Batch record output for regulatory compliance.

5-year warranty.

Enclosure options: IP31 (NEMA2) and IP66 (NEMA4X).

Control.

User Interface: Tactile membrane keypad + alphanumeric LCD.

Security: Optional passcodes to lock settings.

Program Storage: Save 50 custom fill/dispense sequences.

Digital I/O: 4 configurable outputs.

Remote Operation: Contact closure or logic input control.

Documentation.

Full operating manuals.
Validation support documents (cGMP, IQ/OQ protocols).
Maintenance and calibration guides.

Sectors & Applications.

Pharmaceutical & Biotech: Aseptic fill/finish, cell culture media filling, vial/bottle dosing.
Food Production: Adding dyes, vitamins, flavours.
Laboratory R&D: Benchtop reagent prep, Petri dish filling.
Chemical Processing: Metering corrosive or high-viscosity fluids.

Cambridgeshire, United Kingdom

5,773 km away

Model Number

520Di

Stock Number

31648/31647/31649/SR9B

Machinery Masters View

Typical context for this category of equipment. Always confirm specifics with the seller.

Aseptic filling and dispensing in pharmaceutical and biotech industries.
Precise dosing of ingredients like dyes, vitamins, and flavours in food production.
Benchtop reagent preparation and Petri dish filling in laboratory R&D.
Metering of corrosive or high-viscosity fluids in chemical processing.

Typical flow rate: Units of this type commonly pump up to 3.5 L/min.
Dispensing accuracy: Typically offers high precision, often around ±0.5% for dispensing tasks.
Pressure capability: Commonly operates at pressures up to 2 bar.
Programmability: Often features storage for multiple batch routines, typically up to 50.
Enclosure rating: Models in this class are commonly available with IP31 or IP66 ratings, suitable for various industrial environments.
Control interface: Typically features a tactile membrane keypad and an alphanumeric LCD for user interaction.

A peristaltic pump moves fluids by compressing and relaxing a flexible tube, creating a positive displacement. This design ensures the fluid only contacts the tubing, preventing contamination and making it ideal for sterile applications.

Peristaltic pumps are valued in laboratory and pharmaceutical settings for their gentle, non-contact fluid handling, making them suitable for delicate samples and sterile applications. When buying used units, buyers typically prioritise checking tubing condition, motor functionality, and calibration history. Industry sentiment favours these pumps for their reliability, low maintenance requirements, and consistent flow rates. Common strengths include versatility across various fluid viscosities and compatibility with corrosive or shear-sensitive media. Prospective buyers should verify spare parts availability for specific models.

General overview for this equipment type

Machinery Masters Intelligence. General guidance for this category of equipment only, not a substitute for the seller's exact specifications. Always confirm details with the seller.