Masterflex L/S Easy-Load II Peristaltic Pump Head Model 77200-60

Overview

The Masterflex L/S Easy-Load II Peristaltic Pump Head Model 77200-60 is an engineered component for high-integrity fluid handling in laboratory, pilot-scale, and controlled manufacturing environments. As a key element of the L/S modular peristaltic pump system, this pump head operates on the principle of positive displacement via sequential compression of elastomeric tubing by rotating rollers—eliminating fluid contact with mechanical components and ensuring contamination-free transfer. Its design prioritizes operational repeatability, mechanical robustness, and compatibility with standardized L/S-series precision tubing. The 77200-60 variant corresponds to the adjustable occlusion version of the L/S 14 tubing configuration, enabling users to optimize between pressure generation and tubing service life without hardware modification. It is intended for integration with Masterflex L/S-compatible drivers (e.g., 77400-10, 77400-20 series), supporting both single-head and multi-head configurations.

Key Features

• Auto-positioning tubing loading mechanism eliminates manual alignment—reducing setup time and operator variability.
• Four-roller rotor architecture improves mechanical stability, minimizes pulsation amplitude, and enhances flow uniformity across speed ranges.
• Durable polyphenylene sulfide (PPS) housing provides chemical resistance, dimensional stability at elevated temperatures, and compliance with USP Class VI biocompatibility requirements.
• Selectable rotor material: cold-rolled steel (CRS) for cost-sensitive applications; stainless steel (SS) for enhanced corrosion resistance and extended service life in aggressive chemical environments.
• Adjustable occlusion design allows fine-tuning of roller-to-tubing compression—tight occlusion maximizes differential pressure capability; loose occlusion extends tubing fatigue life.
• Modular mounting interface enables direct attachment to L/S-series drivers and supports vertical stacking of up to four pump heads using stainless-steel mounting kits (e.g., 77200-04).

Sample Compatibility & Compliance

The 77200-60 pump head is validated for use with Masterflex L/S-series silicone, Viton®, and Pharmed® BPT tubing (sizes L/S 13 through L/S 36), each delivering defined flow-per-revolution characteristics and pressure ratings. Maximum pressure performance (up to 40 psi / 2.7 bar) is contingent upon tubing wall thickness, durometer, and chemical compatibility—users must consult Masterflex’s Chemical Resistance Guide prior to solvent exposure. The pump head meets mechanical design criteria referenced in ISO 8536-4 (infusion equipment) and supports audit-ready workflows under FDA 21 CFR Part 11 when paired with compliant drivers and software. Its PPS housing complies with UL 94 V-0 flammability rating and exhibits no outgassing in cleanroom-class environments (ISO Class 5/IEC 14644-1).

Software & Data Management

While the 77200-60 is a passive mechanical component, its performance is fully leveraged within Masterflex’s digital ecosystem. When installed on programmable drivers such as the 77400-20 series, it supports RS-232/USB communication protocols, enabling remote speed control, runtime logging, and event-triggered alerts via Masterflex’s intuitive PumpCom software. Audit trails—including occlusion setting changes, run duration, and speed profiles—are timestamped and exportable in CSV format. For regulated laboratories, optional firmware upgrades provide electronic signature capture and user-level access controls aligned with ALCOA+ data integrity principles.

Applications

• Continuous feeding of reagents in analytical HPLC and ICP-MS sample introduction systems.
• Media delivery in cell culture bioreactors requiring sterility assurance and pulse-dampened flow.
• Accurate dispensing of viscous buffers or polymer solutions in QC testing per ASTM D1200 and ISO 2555.
• High-pressure transfer of abrasive slurries in environmental sample preparation (EPA Method 3005A).
• Dual-channel synchronized dosing in parallel reaction screening platforms—enabled by L/S dual-head variants (e.g., 77202-60).
• Pharmaceutical formulation development where tubing changeover must meet cGMP documentation standards (USP <1058>).

FAQ

Is the 77200-60 pump head compatible with non-Masterflex drivers?
Yes—provided the driver features a standardized L/S mounting interface (1.25″ shaft diameter, 3/8″ keyway) and delivers torque sufficient for the selected tubing/occlusion combination.
What is the expected service life of silicone tubing used with this pump head?
Under typical lab conditions (25°C, 100 rpm, medium occlusion), standard Masterflex silicone L/S 14 tubing achieves 200–400 hours of continuous operation; life extends significantly at lower speeds and reduced occlusion.
Can this pump head be validated for use in GMP manufacturing?
Yes—the 77200-60 is routinely included in IQ/OQ/PQ protocols for peristaltic pump systems, especially when paired with SS rotors and Pharmed® BPT tubing for extractables/leachables studies.
Does adjustable occlusion affect calibration stability?
No—Masterflex provides occlusion-specific flow calibration curves for each L/S size; minor occlusion adjustments within the specified range maintain linearity within ±1.5% of full scale.
How many pump heads can be stacked on a single driver without performance degradation?
Up to four units may be mounted vertically; however, maximum recommended count depends on driver model—refer to the driver’s torque specification sheet to avoid thermal overload or speed droop.