Masterflex L/S Digital Variable-Speed Peristaltic Pump Model 07522-20

Overview

The Masterflex L/S Digital Variable-Speed Peristaltic Pump Model 07522-20 is an engineered solution for precise, repeatable, and maintenance-free fluid handling in analytical laboratories, bioprocessing workflows, and industrial QC environments. Based on the peristaltic principle—where rollers compress flexible tubing to generate positive displacement—the pump isolates the fluid path entirely within the disposable tubing, eliminating risk of contamination, leakage, or seal degradation. Its brushless DC motor delivers high torque across the full speed range (0.1–600 rpm), with closed-loop PWM speed control ensuring ±0.1% accuracy at all setpoints. This level of repeatability supports applications requiring strict adherence to GLP and GMP documentation standards, including volumetric dispensing protocols compliant with USP Analytical Instrument Qualification and ISO/IEC 17025 traceability requirements.

Key Features

• Graphical LCD interface with intuitive menu-driven operation and support for seven languages (English, Spanish, French, German, Italian, Portuguese, Chinese) — optimized for multilingual lab personnel and global deployment.
• Four programmable operating modes: Continuous Run, Timed Dispense (with user-defined interval up to 99:59:59), Repeat Dispense (1–9999 cycles), and Volume Dispense (0.001–9999 mL per aliquot), enabling reproducible batch processing without external controllers.
• Onboard storage of calibrated flow profiles for multiple L/S-series tubing sizes (e.g., L/S 13 through L/S 36), allowing rapid switching between tube types while preserving volumetric accuracy.
• DB25 remote I/O interface supporting analog (0–20 mA, 4–20 mA, 0–10 V) and digital (dry-contact) signals for integration into PLC-based automation systems, SCADA networks, or custom-built process control architectures.
• Dual-direction motor operation facilitates bidirectional priming and tubing cleaning, extending tube life and minimizing carryover in sequential sample handling.
• Stackable chassis design (IP33-rated ABS housing) enables vertical space optimization in crowded fume hoods or modular rack systems without compromising structural integrity or thermal management.
• Film-keypad with lock/unlock functionality prevents unauthorized parameter changes—a critical safeguard during validated operations under FDA 21 CFR Part 11-compliant environments.

Sample Compatibility & Compliance

The Model 07522-20 accommodates all standard L/S-series pump tubing—including Standard, Easy-Load®, Easy-Load II®, Easy-Load 3®, High-Performance Cartridge, and Multi-Channel configurations—enabling seamless adaptation to diverse viscosity, particulate load, and chemical compatibility requirements. Tubing selection directly governs flow performance: e.g., L/S 13 achieves 0.006–360 mL/min, while L/S 36 supports up to 2900 mL/min (or 3400 mL/min with optimized calibration). The system complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions) for electromagnetic compatibility. Its non-metallic wetted path meets USP Class VI biological safety criteria when paired with certified silicone or PharMed® BPT tubing. Documentation packages—including optional NIST-traceable calibration reports (Cat. No. 17050-01)—support audit readiness for ISO 9001, ISO 13485, and FDA-regulated facilities.

Software & Data Management

While the 07522-20 operates autonomously via its embedded firmware, it natively supports analog and discrete signal logging for external data acquisition systems. The tachometer pulse output (0–20 mA / 4–20 mA / 0–10 V) permits real-time speed verification and closed-loop feedback in supervisory control loops. All dispense events—including volume totals, cycle counts, and elapsed runtime—are retained in non-volatile memory and accessible via front-panel review. For regulated environments, the device supports electronic record integrity through time-stamped parameter logs and password-protected configuration archiving. Optional accessories—including handheld remote controller (Cat. No. 07523-97) and footswitch (Cat. No. 07523-92)—extend operational flexibility without compromising data governance.

Applications

This pump serves critical roles in pharmaceutical formulation (buffer transfer, media preparation), clinical diagnostics (reagent metering in automated analyzers), environmental testing (continuous sampling in EPA Method 1664B workflows), food & beverage QC (viscous product dosing), and academic research (cell culture perfusion, chromatography mobile phase delivery). Its ability to handle shear-sensitive biologics, abrasive slurries, and aggressive solvents—without valves, seals, or dead volumes—makes it ideal for applications where cross-contamination or downtime must be minimized. The programmable delay function between dispense cycles further enables timed-release studies and multi-step reaction protocols.

FAQ

What tubing sizes are compatible with the Model 07522-20?
It accepts all L/S-series tubing from L/S 13 to L/S 36, including Standard, Easy-Load®, Easy-Load II®, Easy-Load 3®, High-Performance Cartridge, and Multi-Channel variants. Note: L/S 25 tubing is incompatible with standard pump heads, and L/S 36 requires dedicated multi-channel or cartridge heads.
Is remote analog control supported out of the box?
Yes—the DB25 female port provides native support for 0–20 mA, 4–20 mA, and 0–10 V analog inputs for speed control, plus dry-contact signals for start/stop, direction, and clean functions.
Does the pump include factory calibration data?
Each unit ships with preloaded calibration coefficients for common L/S tubing sizes. Optional NIST-traceable calibration reports (Cat. No. 17050-01) are available for regulatory submissions and instrument qualification protocols.
Can multiple units be stacked physically without thermal or electrical interference?
Yes—its IP33-rated ABS enclosure and passive cooling architecture allow secure vertical stacking. Units retain full operational integrity and meet CE/UL safety clearances when installed per manufacturer spacing guidelines.
What power supply options are available for international use?
The 07522-20 accepts universal 90–260 VAC input (50/60 Hz). Order suffix “-30” for 230 VAC-configured units with region-specific IEC 320 C14 inlets; suffix “-20” denotes 115 VAC configuration.