Watson Marlow 503U Digital Peristaltic Pump

The Watson Marlow 503U Digital Peristaltic Pump is a precision fluid handling system engineered for contamination-free liquid transfer. Using advanced digital control and peristaltic technology, it provides sterile, accurate, and reproducible pumping for laboratories, biopharma, food processing, and chemical industries. Its non-contact fluid path ensures sterility and eliminates cross-contamination risks.

At HiTechTrader, we provide the Watson Marlow 503U as a refurbished and validated solution, complete with compatible tubing, pump heads, and accessories. Every system is tested for reliability and performance, delivering high-quality peristaltic pumping technology at a fraction of the cost of new units.

General Description

1. Brand: Watson Marlow
2. Model: 503U Digital Peristaltic Pump
3. Type: Digital peristaltic pump with contamination-free fluid path
4. Purpose: Sterile, accurate transfer of liquids through flexible tubing
5. Applications: Biopharma, laboratory research, food production, chemical handling, water treatment

Key Features

1. Flow Range: 0.004 mL/min to 3500 mL/min (3.5 L/min)
2. Speed Range: 55–220 RPM, fully adjustable
3. Pump Head: Supplied with 505RL, compatible with multiple tube sizes
4. Tubing Compatibility: Supports bores from 0.5 mm to 9.6 mm
5. Digital Interface: LCD display with intuitive menu-driven controls
6. Remote Control: Remote/Auto/Tachometer port for automation
7. Flow Control: Turndown ratio up to 2200:1, proportional to motor speed
8. Safety Features: Leak detection, low fluid alarm, auto-restart after power loss
9. Diagnostics: Tracks hours run, total flow, and revolutions

Electrical & Physical Specifications

1. Voltage: 100–120V or 220–240V, 50/60 Hz, single phase
2. Power Consumption: ~100 VA
3. Noise Level: <70 dBA at 1 meter
4. Ambient Temperature: 5–40 °C (41–104 °F)
5. Altitude: Up to 2000 m (6562 ft)
6. Ingress Protection: IP31 or IP66 (washdown model available)
7. Physical Design: Compact footprint for benchtop or process integration

Safety & Compliance

1. Certifications: CE, cETLus, RoHS, IRAM, C-Tick compliant
2. Tubing Safety: Compatible with NSF/ANSI 61-certified tubing (Marprene, LoadSure)
3. Electrical Protection: Built-in overcurrent, thermal, and restart safeguards
4. Enclosure: Options for lab use or harsh washdown environments

Digital & Remote Capabilities

1. Protocols: EtherNet/IP™, PROFIBUS®, PROFINET®, RS232, RS485, SCADA
2. Digital I/O: Configurable for start/stop, direction, and control modes
3. Relay Outputs: Four configurable 24 V / 110 V relays
4. Data Logging: Stores up to 100 dosing recipes and operational history
5. Monitoring: Real-time flow display, sensor scaling, and diagnostics

Applications

1. Pharmaceutical & Biotech: Sterile transfer of media, buffers, and cell cultures
2. Food & Beverage: Flavor dosing, aseptic fluid transfer, hygienic batching
3. Chemical Industry: Corrosive, viscous, or particle-laden fluid transfer
4. Environmental: Water treatment, sampling, precise reagent dosing
5. Laboratories: Pilot-scale experiments, continuous flow, and accurate dosing

Why Buy from HiTechTrader?

At HiTechTrader, we specialize in supplying the Watson Marlow 503U Digital Peristaltic Pump with compatible pump heads and tubing. Each unit is fully refurbished, tested, and validated for performance, giving customers cost savings without sacrificing reliability. With technical support, application guidance, and quick delivery, we ensure laboratories and industries achieve efficient, sterile, and reproducible fluid handling.