Masterflex Quattroflow Pump Head System with 74000-35 Drive Unit

Overview

The Masterflex® Quattroflow™ Pump Head System (Model 74000-35) is a precision-engineered peristaltic pumping solution designed specifically for the gentle, sterile, and scalable transfer of sensitive biopharmaceutical fluids—including whole blood, plasma derivatives, monoclonal antibodies, viral vectors, and vaccine formulations. Unlike conventional rotary peristaltic pumps that rely on roller compression of tubing—and thus impose high shear stress and pulsation—the Quattroflow system operates on a positive-displacement diaphragm principle. Its patented four-chamber (quadruple-diaphragm), synchronized stroke mechanism delivers ultra-low pulse amplitude (<2%) and minimal shear rate, preserving macromolecular integrity and cell viability throughout the process. The system integrates a single-use, pre-sterilized pump head (QF150SU) with a dedicated Masterflex drive unit, eliminating wetted-part reuse, cleaning validation, and steam-in-place (SIP) requirements. This architecture aligns with current Good Manufacturing Practice (cGMP) expectations for single-use bioprocessing and supports rapid changeover between batches or products without risk of cross-contamination.

Key Features

• Four-chamber diaphragm pumping technology ensuring continuous, low-pulsation flow with shear rates below 100 s⁻¹—critical for fragile biologics and cell suspensions.
• Disposable, gamma-irradiated QF150SU pump head with fluid path constructed entirely from medical-grade polypropylene; fully compliant with USP Class VI and ISO 10993-5 cytotoxicity standards.
• Drive unit (74000-35) features a brushless DC motor with ±0.1% speed accuracy across its full 3000 rpm range, enabling reproducible volumetric delivery under variable backpressure conditions.
• Graphical LCD interface displays six real-time operational parameters: motor RPM, calculated flow rate (L/h), dispense volume (mL), cumulative volume (L), interval time (s), and repeat cycle count—enabling precise protocol execution.
• Programmable dispensing modes: volume-triggered (e.g., 500 mL per cycle) or time-triggered (e.g., 30-second intervals), supporting both laboratory-scale media preparation and pilot-scale buffer exchange.
• IP33-rated ABS housing suitable for benchtop lab environments; optional stainless-steel, IP66/NEMA 4X-rated variants available for washdown-capable cleanroom integration.

Sample Compatibility & Compliance

The QF150SU pump head is validated for use with aqueous buffers, protein solutions (up to 200 mg/mL), lipid nanoparticles (LNPs), and shear-sensitive mammalian cell cultures (e.g., CHO, HEK293). It exhibits no extractables above ICH Q5E thresholds when tested per USP and ASTM D4292. All materials contacting fluid are non-leaching, non-pyrogenic, and compatible with 0.1 N NaOH, 0.5% phosphoric acid, and 30% ethanol for post-use integrity verification. The system meets ISO 13485 design control requirements and supports audit readiness for FDA 21 CFR Part 11-compliant electronic records when paired with validated data logging software.

Software & Data Management

While the 74000-35 drive operates as a standalone unit, it provides analog (0–10 V) and digital (RS-485 Modbus RTU) outputs for integration into SCADA, MES, or PLC-controlled bioprocess workflows. Optional Masterflex Connect™ software enables remote configuration, firmware updates, and export of timestamped operation logs (CSV format) including start/stop events, alarm history, and parameter deviations—facilitating GLP-compliant documentation and root-cause analysis during process qualification.

Applications

• Buffer and media preparation in upstream and downstream bioprocessing suites.
• Continuous perfusion culture feed and harvest in single-use bioreactors (SUBs).
• Fill-finish operations for clinical-grade biologics where sterility assurance and particulate control are critical.
• Automated column packing and equilibration in preparative chromatography systems.
• Low-shear transfer of cryopreserved cell banks between storage and expansion vessels.
• QC lab applications requiring calibrated, repeatable dispensing of reference standards and diluents.

FAQ

Is the QF150SU pump head certified for sterile barrier integrity?
Yes—each QF150SU head undergoes 100% helium leak testing (≤1×10⁻⁹ mbar·L/s) and is supplied double-bagged with ISO 5 cleanroom assembly and gamma sterilization (25 kGy), documented per ISO 11137.

Can the 74000-35 drive be integrated into a GMP manufacturing execution system (MES)?
Yes—its RS-485 Modbus RTU port supports bidirectional communication with validated MES platforms; all command executions and status changes generate traceable, time-stamped logs.

What is the maximum allowable backpressure at 180 L/h?
The QF150SU maintains rated flow up to 4 bar (58 psi) at ambient temperature; pressure rating decreases linearly to ~2.5 bar at 60°C due to diaphragm material modulus shift.

Does the system support automated calibration against gravimetric standards?
Yes—the drive’s volume-based dispensing mode allows user-defined calibration offsets using balance-derived mass-to-volume conversion factors, stored in non-volatile memory for regulatory traceability.

How often must the drive unit undergo preventive maintenance?
None required—the brushless DC motor and sealed electronics are rated for >20,000 hours of continuous operation; only periodic visual inspection of mounting hardware and cable integrity is recommended per IEC 62061.