Prefluid WF600 High-Precision Multi-Channel Dispensing Peristaltic Pump

Overview

The Prefluid WF600 is a high-precision, multi-channel dispensing peristaltic pump engineered for repeatable, volumetric liquid handling in regulated laboratory and pilot-scale production environments. Unlike conventional open-loop peristaltic systems, the WF600 integrates a brushless DC servo motor with real-time rotational feedback and closed-loop speed regulation—ensuring consistent flow delivery across variable backpressures and tubing compliance conditions. Its operational principle relies on positive displacement via sequential occlusion of elastomeric tubing by rotating rollers, eliminating fluid contact with mechanical components and guaranteeing contamination-free transfer. Designed for applications demanding traceable, reproducible dosing—such as media preparation, reagent formulation, and food-grade additive dispensing—the WF600 supports both continuous pumping and discrete batch dispensing with programmable volume, time, and suction-angle parameters.

Key Features

• High-accuracy dispensing with ≤±3% volumetric error under calibrated conditions, validated using gravimetric or volumetric standard methods per ISO 8655-3.
• Aluminum die-cast chassis with electrophoretic epoxy-polyester coating—resistant to common laboratory solvents, acids, and cleaning agents; surface smoothness <0.8 µm Ra for effective wipe-down and microbial control.
• Intelligent dispensing logic including empty-bottle detection (via optical or proximity sensor integration), automatic priming, post-dispense suction angle compensation (0°–15° adjustable), and anti-drip/anti-splash acceleration/deceleration profiles.
• Closed-loop servo control architecture ensures stable rotational velocity across the full 0.1–600 rpm range, enabling precise low-flow operation down to 0.05 mL/min while maintaining torque integrity at elevated pressures (up to 3 bar typical with Norprene® LST or PharMed® BPT tubing).
• Dual-language (English/Chinese) graphical interface with intuitive menu navigation, real-time flow monitoring, and onboard data logging for dispense count, cumulative volume, and error events.
• Industrial-grade communication suite: native RS485 port compliant with Modbus RTU protocol (function codes 03/06/16), supporting integration into SCADA, MES, or LIMS platforms with timestamped transaction records.

Sample Compatibility & Compliance

The WF600 accommodates standard peristaltic pump tubing sizes from 0.5 mm to 6.4 mm inner diameter (ID), compatible with FDA-compliant materials including silicone, Viton®, C-Flex®, and PharmPure®. It meets IP56 ingress protection requirements for dust resistance and water jet protection—suitable for humid or splash-prone environments such as cleanrooms (ISO Class 7–8), QC labs, and food processing areas. While not certified to IEC 61000-6-2/6-4 or UL 61010-1 out-of-the-box, its electrical design adheres to fundamental safety principles aligned with EN 61326-1 (EMC for laboratory equipment) and supports configuration for GLP/GMP-aligned workflows—including audit-trail-enabled dispensing logs when interfaced with compliant host software.

Software & Data Management

Onboard firmware stores up to 100 user-defined dispensing programs, each configurable with volume, duration, acceleration profile, suction angle, and pause intervals. All dispense cycles are timestamped and logged internally (non-volatile memory) with power-fail retention—retaining program state and counter values during unexpected shutdowns. When connected via RS485, the pump transmits real-time status registers (e.g., current speed, total pulses, fault codes) and accepts remote commands for start/stop, parameter update, and calibration reset. Optional PC-based configuration tools support CSV export of dispense history, batch ID tagging, and basic statistical process monitoring (SPC) for volume consistency tracking—facilitating alignment with ISO 9001 documentation requirements.

Applications

• Preparation of microbiological growth media (e.g., Mueller-Hinton, LB, Sabouraud dextrose) with strict volume repeatability for CLSI-compliant susceptibility testing.
• Accurate metering of flavorings, colorants, and preservatives in food & beverage R&D and small-batch production lines.
• Automated filling of diagnostic reagents into vials or microtiter plates under ambient or refrigerated conditions.
• Cell culture workflow support: sterile buffer exchange, feed supplementation, and harvest transfer where tubing sterilization (e.g., gamma or EtO) is required between batches.
• Environmental lab use for standardized dilution series generation in water quality analysis (e.g., nutrient spiking per EPA Method 365.4).

FAQ

What tubing sizes are supported by the WF600?
The pump head accepts tubing with inner diameters from 0.5 mm to 6.4 mm; recommended wall thickness ranges from 0.8 mm to 2.4 mm depending on pressure and longevity requirements.
Does the WF600 support 21 CFR Part 11-compliant electronic records?
The standalone unit does not provide Part 11 features (e.g., electronic signatures, audit trails); however, when integrated with validated third-party SCADA or LIMS software that implements these controls, it serves as a compliant peripheral device.
Can the WF600 operate continuously for 24/7 duty cycles?
Yes—its brushless motor, thermal management design, and IP56-rated enclosure enable unattended operation in controlled indoor environments; routine tubing replacement intervals should follow manufacturer guidelines based on chemical compatibility and flow rate.
Is calibration traceable to national standards?
Volume calibration is performed gravimetrically using NIST-traceable analytical balances; users may execute in-house calibration protocols aligned with ISO/IEC 17025 if operating within an accredited laboratory framework.
How is tubing wear monitored or compensated?
While no built-in wear sensor exists, the closed-loop motor controller detects torque anomalies; users are advised to log tubing usage hours and implement scheduled replacement per tubing vendor recommendations to maintain accuracy and prevent occlusion failure.