ZWF-111 Reciprocal Large-Capacity Incubator Shaker

Overview

The ZWF-111 Reciprocal Large-Capacity Incubator Shaker is an engineered platform for scalable bioprocessing applications requiring precise temperature control and linear oscillatory motion. Designed for pilot-scale fermentation, microbial culture expansion, and pharmaceutical process development, it operates on the principle of reciprocal (back-and-forth) motion—distinct from orbital or rotary shakers—delivering high-shear mixing ideal for oxygen-sensitive or viscous cultures where uniform suspension and gas transfer are critical. Its 284 L chamber volume supports high-density vessel loading, enabling reproducible cultivation across diverse flask configurations—from 50 mL test tubes to 3000 mL bioreactor flasks—without compromising thermal homogeneity or mechanical stability. The unit employs forced-air convection with PID-regulated heating and intelligent environmental scanning to maintain setpoint accuracy within ±0.1°C at 37°C, meeting foundational requirements for GLP-compliant cell growth studies and upstream biomanufacturing workflows.

Key Features

• Reciprocal oscillation mechanism with infinitely adjustable stroke (0–50 mm), optimized for aerobic fermentation, protein expression, and suspension cell culture
• PID-controlled microprocessor system with real-time environmental scanning, ensuring dynamic compensation for ambient fluctuations and load-dependent thermal drift
• Backlit LCD interface displaying simultaneous readouts of setpoint temperature, actual chamber temperature, speed, stroke, and remaining timer duration
• Parameter encryption lock prevents unauthorized modification of operational settings—essential for audit-ready SOP execution in regulated environments
• Auto-recovery function restores pre-interruption conditions after unexpected power loss, preserving experimental continuity and data integrity
• Brushless AC induction motor with constant torque delivery across full speed range (30–240 rpm), eliminating carbon brush wear and reducing long-term maintenance cycles
• Soft-start acceleration circuitry minimizes mechanical shock during startup, protecting fragile cultures and minimizing liquid splashing in large-volume vessels
• Electrostatically coated steel chassis with reinforced tempered glass viewing window and ergonomic manual access door

Sample Compatibility & Compliance

The ZWF-111 accommodates up to 66 × 50 mL tubes, 45 × 250 mL Erlenmeyer flasks, or 6 × 3000 mL vessels per cycle—validated for use with standard ISO-certified glassware and USP-grade polypropylene containers. Its temperature uniformity (≤ ±1.0°C at 37°C) and stability (≤ ±0.1°C) align with ASTM E1265–22 guidelines for incubator shaker performance verification. While not intrinsically certified for GMP manufacturing, its design supports integration into FDA 21 CFR Part 11–compliant workflows when paired with validated electronic lab notebooks (ELNs) and audit-trail-enabled data loggers. The absence of refrigeration excludes cryogenic applications but ensures robust thermal consistency in ambient-limited laboratories (5–25°C).

Software & Data Management

This model operates as a standalone instrument with embedded firmware; no proprietary software is required for basic operation. All parameters—including temperature, speed, stroke, and timer—are stored in non-volatile memory and retained through power cycles. Optional RS-232 or USB-to-serial interfaces (available via third-party adapters) enable connection to external SCADA systems or custom Python/MATLAB scripts for periodic data polling. Timestamped event logs—including over-temperature alarms, motor faults, and door-open interruptions—are accessible via the LCD menu and support root-cause analysis during QA investigations. For full traceability, users are advised to implement external logging solutions compliant with ISO/IEC 17025 documentation standards.

Applications

• High-yield bacterial and yeast fermentation under controlled aeration and thermal conditions
• Large-volume mammalian cell suspension culture for monoclonal antibody production
• Enzyme kinetics assays requiring consistent shear profiles and thermal stability
• Environmental microbiology studies involving soil slurry or wastewater inocula
• Pharmaceutical stability testing per ICH Q1A(R3) guidelines using multi-flask arrays
• Biopolymer synthesis and hydrogel formation under oscillatory shear stress
• Teaching laboratory modules in biochemical engineering and industrial biotechnology

FAQ

Is the ZWF-111 suitable for anaerobic culture applications?
No. It lacks inert gas purging capability and operates with ambient air convection; therefore, it is not appropriate for strict anaerobic or microaerophilic conditions.
Can this shaker be used with 5 L Fernbach flasks?
Yes—its maximum capacity includes 6 × 3000 mL vessels; however, 5 L flasks exceed the specified internal height (515 mm) and are not recommended without verified mechanical clearance validation.
Does the unit comply with CE or UL safety standards?
It meets GB/T 14710–2009 (Chinese national standard for environmental adaptability of medical electrical equipment) and carries CCC certification; CE/UL listing requires localized third-party assessment and is not factory-installed.
What maintenance intervals are recommended for the drive system?
The brushless motor requires no scheduled lubrication or brush replacement; annual inspection of belt tension (if equipped with timing belt transmission) and calibration verification against NIST-traceable thermometers are advised.
Is remote monitoring supported out-of-the-box?
No native Ethernet or Wi-Fi connectivity is provided; integration with building management systems (BMS) or centralized lab networks necessitates external IoT gateways or programmable logic controllers (PLCs).