PreFluid WF600G High-Precision Peristaltic Dispensing Pump

Overview

The PreFluid WF600G is an industrial-grade, high-precision peristaltic dispensing pump engineered for repeatable volumetric liquid handling in regulated laboratory, pilot-scale, and light manufacturing environments. Utilizing a closed-loop DC servo motor drive system, it delivers consistent rotational torque and speed stability across its full 10–600 rpm operating range—critical for maintaining dosing repeatability in viscous, shear-sensitive, or sterile applications. Unlike open-loop stepper-based pumps, the WF600G’s feedback-controlled architecture ensures minimal speed drift under variable load conditions (e.g., changing backpressure or fluid viscosity), directly supporting compliance with GLP and GMP-aligned workflows where traceability and reproducibility are mandatory. Its design prioritizes operational integrity: sealed electronics, IP54 ingress protection, and chemically resistant housing enable reliable use in humid, washdown, or low-biocontainment settings—such as QC labs processing veterinary biologics or R&D facilities handling semi-solid formulations.

Key Features

• Precision dosing accuracy of ≤ ±0.5% (validated at 100 mL, 250 mL, and 500 mL volumes using #73 tubing and recommended RPM settings)
• Bilingual (English/Chinese) LCD interface with intuitive menu navigation for parameter setup, calibration verification, and batch logging
• Programmable pre-acceleration ramp to suppress splashing or foaming during start-up; adjustable post-dispense retraction (0–360°) to eliminate drip
• Non-volatile memory retains all operational parameters—including dose volume, run time, and mode selection—after power loss
• Front-panel control layout optimized for glove-compatible operation; tactile keypad with backlighting for low-light environments
• Multiple external control options: isolated relay/TTL trigger inputs, 4–20 mA analog setpoint interface, and RS485 serial communication (custom ASCII protocol, Modbus-RTU ready)
• Corrosion-inhibiting surface coating on aluminum alloy chassis; seamless, cleanable geometry compliant with ISO 14644-1 Class 8 (ISO 8) lab hygiene standards

Sample Compatibility & Compliance

The WF600G accommodates a broad spectrum of liquids—from low-viscosity aqueous buffers to high-viscosity gels (e.g., vaccine suspensions, topical ointments, edible oils)—via interchangeable YZ35 and KZ35 pump heads paired with certified pharmaceutical-grade tubing (#73 and #82 ID). Its peristaltic mechanism ensures zero fluid contact with moving parts, eliminating cross-contamination risk and simplifying cleaning validation. The pump meets IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions) standards. While not FDA 510(k)-cleared as a medical device, its architecture supports 21 CFR Part 11-compliant data integrity when integrated with validated SCADA or LIMS systems via RS485 audit trail logging. It is routinely deployed in facilities adhering to ISO 9001, ISO 13485, and EU GMP Annex 11 requirements for automated process equipment.

Software & Data Management

The WF600G operates autonomously without proprietary software but provides robust interoperability for integration into existing lab automation ecosystems. Its RS485 port supports bidirectional command/response communication, enabling remote initiation, real-time speed monitoring, and parameter upload/download. When paired with third-party control platforms (e.g., LabVIEW, Python-based PySerial scripts, or PLCs), users can implement full audit trails—including timestamped start/stop events, total dispensed volume counters, and error logs (e.g., “tubing occlusion,” “motor stall”). The built-in memory stores up to 10 user-defined dispensing protocols, each with independent volume, speed, retraction angle, and delay settings—facilitating rapid changeover between product lines without recalibration.

Applications

• High-accuracy filling of veterinary biologicals (e.g., live attenuated vaccines requiring ≤1 mL tolerance per 100 mL dose)
• Batch dispensing of semi-solid personal care products (shampoos, conditioners, creams) into primary packaging
• Preparation of standardized reference samples for analytical method validation (HPLC, GC, viscometry)
• In-line dilution and reagent addition in automated assay workstations
• Controlled transfer of food-grade oils or beverages into intermediate bulk containers (IBCs) under hygienic conditions

FAQ

What tubing sizes are supported, and how do I select the optimal one for my fluid?
The WF600G supports #73 and #82 ID tubing with YZ35 and KZ35 pump heads. For viscosities 5000 mPa·s or particulate-laden suspensions, #82 improves flow consistency and tubing life.
Does the pump support continuous flow mode, or is it dispense-only?
It supports both discrete volumetric dispensing and continuous flow operation via analog (4–20 mA) or serial speed control—ideal for inline blending or feed-to-reactor applications.
Can I validate the pump’s performance per USP <1058> Analytical Instrument Qualification?
Yes. Its stable speed control, non-drifting calibration, and digital parameter retention allow IQ/OQ execution using standard protocols; PQ should be performed with your specific fluid, tubing, and target volume.
Is firmware upgrade capability available?
Firmware updates are delivered via RS485 using vendor-provided utility software; revision history and release notes are documented in the technical manual supplied with each unit.