Cole-Parmer Easy-Load Peristaltic Pump

Overview

The Cole-Parmer Easy-Load Peristaltic Pump is an engineered solution for precise, contamination-free fluid transfer in analytical laboratories, bioprocessing workflows, and quality control environments. Operating on the principle of peristalsis—where rollers compress flexible tubing to generate positive displacement—the pump isolates the fluid path entirely from mechanical components, eliminating risk of cross-contamination, leakage, or seal degradation. Designed for integration into automated systems or standalone benchtop use, it delivers repeatable volumetric delivery across a wide dynamic range without requiring recalibration for different tubing sizes within the L/S series. Its core architecture supports continuous operation under variable load conditions while maintaining stable rotational velocity via closed-loop motor control with back-electromotive force (back-EMF) feedback.

Key Features

• Two operational modes: direct RPM display or calibrated flow rate (mL/min) output—user-selectable via front-panel interface
• Dual-speed resolution architecture: 0.1 rpm resolution at low speeds (1.6–100 rpm) for ultra-low-flow applications (e.g., reagent dosing, cell culture media perfusion); 1 rpm resolution at higher speeds (10–600 rpm) for bulk transfer tasks
• Reversible motor drive enables pre- and post-pumping tube purge, bidirectional fluid handling, and self-cleaning cycles—critical for GMP-compliant sample preparation and cleaning-in-place (CIP) protocols
• Integrated 1/10 HP brushless DC motor with soft-start functionality minimizes mechanical stress on tubing and ensures consistent torque delivery across voltage fluctuations
• IP23-rated stacked polymer enclosure provides protection against vertically dripping and splashing water—suitable for wet-lab environments and shared instrumentation benches
• Detachable speed controller module allows remote mounting and centralized system integration; LED status indicators provide real-time power-on, direction, and fault-state feedback

Sample Compatibility & Compliance

The Easy-Load pump is validated for use with Cole-Parmer’s L/S 24 silicone or PharMed® BPT tubing (ID: 3.2 mm, OD: 8.0 mm), supporting flow rates from 0.01 mL/min (micro-dosing) up to 1700 mL/min (high-throughput transfer). Tubing compatibility extends to USP Class VI-certified materials, ensuring suitability for pharmaceutical manufacturing, clinical diagnostics, and ISO 13485-regulated device testing. The pump’s design conforms to IEC 61000-6-2 (immunity) and IEC 61000-6-3 (emissions) standards. While not intrinsically safe, its non-sparking motor and grounded chassis meet general laboratory electrical safety requirements per UL 61010-1 and EN 61010-1. Documentation packages support GLP audit trails when paired with compliant data loggers or SCADA interfaces.

Software & Data Management

The Easy-Load operates as a stand-alone analog-controlled device but features 0–10 VDC analog input/output terminals for external speed modulation and tachometer signal feedback—enabling seamless integration with PLCs, LabVIEW-based acquisition systems, or custom HMI dashboards. Optional RS-232 or USB-to-serial adapters (sold separately) allow ASCII command protocol communication for remote start/stop, direction control, and speed setting. All parameter changes are retained in non-volatile memory. Though the pump itself does not store historical data, its analog outputs support time-synchronized logging in FDA 21 CFR Part 11-compliant platforms when deployed with validated electronic record systems.

Applications

• Continuous feeding of mobile phases in HPLC and LC-MS sample introduction loops
• Controlled nutrient/media delivery in bioreactor perfusion systems and hollow-fiber cell culture platforms
• Automated calibration standard dilution in ICP-OES and AA spectroscopy workflows
• Low-shear transfer of shear-sensitive biological suspensions (e.g., platelets, exosomes, viral vectors)
• Environmental water sampling—integrated into portable field analyzers for EPA Method-compliant filtration and extraction protocols
• In-line buffer exchange during chromatographic column regeneration and system priming

FAQ

Is tubing calibration required for each new batch of L/S 24 tubing?
No—once calibrated using the factory-provided reference curve for L/S 24, the pump maintains accuracy across batches due to tight dimensional tolerances certified per ASTM D2240 Shore A hardness and ISO 3601-1 O-ring groove specifications.

Can the pump be operated continuously for 24/7 duty cycles?
Yes—rated for continuous operation at ≤80% of maximum speed (480 rpm) with ambient temperatures ≤35°C and adequate ventilation; thermal shutdown protection engages above 65°C internal housing temperature.

What regulatory documentation is available for validation purposes?
Factory test reports, RoHS/REACH declarations, CE DoC, and UL Component Recognition files (E491236) are provided upon request; IQ/OQ templates compatible with Annex 11 and GAMP5 frameworks are available through Cole-Parmer’s Technical Support Portal.

Does the pump support pulseless flow?
While peristaltic action inherently generates minor pulsation, flow dampening is achievable via downstream accumulator vessels or by operating at ≥300 rpm with L/S 24 tubing—reducing pulsation amplitude to <±3% of mean flow under laminar conditions.