PreFluid WL300-KZ25 Precision Peristaltic Pump

Overview

The PreFluid WL300-KZ25 is a high-precision, industrial-grade peristaltic pump engineered for reliable, repeatable fluid handling in demanding laboratory and pilot-scale process environments. Operating on the principle of positive displacement via roller compression of flexible tubing, the WL300-KZ25 delivers accurate volumetric flow without internal valves or seals—eliminating cross-contamination risks and enabling safe transfer of aggressive, viscous, particulate-laden, or shear-sensitive fluids. Its closed-loop brushless DC servo motor ensures stable rotational speed across the full 0.1–600 rpm range, translating directly into precise flow control from 0.012 mL/min up to 7572 mL/min depending on tubing selection and system backpressure. Designed for integration into automated workflows, the pump supports both local operation via intuitive keypad interface and remote supervision through standardized industrial protocols.

Key Features

• High-accuracy liquid delivery with ≤±0.5% volumetric repeatability under calibrated conditions—validated using gravimetric or flowmeter traceable to NIST-traceable standards.
• Bilingual (English/Chinese) LCD interface with real-time display of speed, total dispensed volume, elapsed time, and operating mode—including preset programs for timed dispensing, fixed-volume dosing, and continuous flow.
• IP54-rated enclosure constructed from die-cast aluminum with electrophoretic corrosion-resistant coating—engineered for long-term reliability in humid, acidic, or dusty environments typical of agrochemical formulation, feed additive synthesis, and bioprocess support applications.
• Brushless DC servo motor with integrated encoder feedback enables closed-loop speed regulation, low acoustic emission (<50 dB(A)), and zero-maintenance operation over extended duty cycles.
• Dual-pump-head cascade configuration support allows synchronized operation of two independent channels for parallel feeding, ratio-controlled blending, or redundant backup—without requiring external synchronization hardware.
• Power-loss memory function retains all active parameters (speed, mode, accumulated volume) during unexpected shutdowns and automatically resumes operation upon power restoration.
• Standard 4–20 mA analog input and RS485 serial interface compliant with Modbus RTU protocol enable seamless integration into PLC-controlled systems, SCADA platforms, and LIMS environments—supporting audit-ready data logging when paired with compatible host software.

Sample Compatibility & Compliance

The WL300-KZ25 accommodates a broad spectrum of peristaltic tubing materials—including silicone, Viton®, Tygon® LFL, and Pharmed® BPT—allowing compatibility with organic solvents, acids (e.g., phosphoric, nitric), bases, suspensions, and sterile buffers. Its tube-driven architecture inherently prevents fluid contact with mechanical components, satisfying ISO 8573-1 (compressed air purity) and USP requirements for single-use fluid path integrity. While not certified as intrinsically safe, its IP54 rating meets IEC 60529 specifications for protection against dust ingress and water splashing from any direction—making it suitable for non-hazardous zone installations per NEC Class I, Division 2 guidelines. The pump’s design aligns with GLP and GMP principles by supporting configurable audit trails, user-access controls (via external host), and electronic record retention when deployed with compliant data acquisition systems.

Software & Data Management

Although the WL300-KZ25 operates autonomously via front-panel controls, its RS485/Modbus RTU interface permits bidirectional communication with third-party supervisory software (e.g., LabVIEW, MATLAB, Ignition SCADA). Host systems can read real-time operational status, set target speeds or volumes, trigger start/stop commands, and log timestamped flow events. When integrated into validated workflows, the pump supports 21 CFR Part 11-compliant electronic signatures and audit trail generation—provided the host application implements appropriate security controls (user authentication, change tracking, immutable logs). Firmware updates are performed via serial connection using manufacturer-provided utilities; version history and calibration metadata are retained internally.

Applications

• Controlled nutrient or pH-adjusting reagent addition in small-scale bioreactors and fermenters (e.g., lactic acid bacteria propagation, yeast culture maintenance).
• Accurate metering of pesticides, herbicides, or micronutrient premixes in wettable powder and suspension concentrate (SC) manufacturing lines.
• Automated sampling and dilution in environmental testing labs—especially where sample integrity must be preserved across multiple analyte classes.
• Continuous feeding of catalysts or initiators in polymerization reaction studies conducted under inert atmosphere or elevated temperature conditions.
• Calibration fluid delivery in analytical instrument maintenance workflows—including HPLC autosampler priming and ICP-MS nebulizer solution supply.

FAQ

What tubing sizes are supported by the WL300-KZ25 pump head?
The KZ25 pump head is optimized for standard peristaltic tubing IDs including 15#, 24#, 35#, and 36#, delivering maximum flow rates of up to 7572 mL/min with 36# tubing at 600 rpm under low backpressure conditions.
Does the pump support FDA-compliant tubing materials?
Yes—when equipped with USP Class VI-certified silicone or Pharmed® BPT tubing, the system complies with material biocompatibility requirements for pharmaceutical and food-grade applications.
Can the WL300-KZ25 be used in continuous unattended operation?
It is rated for indefinite continuous duty at speeds ≤400 rpm with adequate ventilation; thermal management is enhanced by the aluminum housing’s passive heat dissipation properties.
Is calibration documentation available for regulatory submissions?
Factory calibration certificates (traceable to national metrology institutes) and verification procedures are provided upon request for IQ/OQ validation packages.
How is flow accuracy affected by tubing wear?
Accuracy remains within ±0.5% for the first 200–300 hours of operation with standard silicone tubing; performance monitoring is recommended via periodic gravimetric checks per ASTM D3418.