WIGGENS WH-400 Temperature-Controlled Incubator

Overview

The WIGGENS WH-400 Temperature-Controlled Incubator is a precision-engineered, benchtop-to-floor-standing laboratory incubator designed for stable, reproducible thermal environments in cell culture, microbiology, enzymatic assays, and long-term biological storage applications. Built upon a robust convection-heating architecture with forced-air circulation, the WH-400 maintains tight thermal uniformity across its 400 L working volume through optimized airflow distribution and high-efficiency insulation. Its core control system employs a digital PID algorithm with real-time feedback from multiple internal sensors, enabling dynamic compensation for load changes, door openings, and ambient fluctuations. The incubator operates within a validated temperature range of RT +5°C to 65°C — suitable for both mesophilic cultivation (e.g., mammalian cells at 37°C) and thermotolerant studies (e.g., fungal growth or enzyme stability testing). All thermal performance specifications — including ±0.5°C accuracy at 37°C and ±0.1°C stability under steady-state conditions — are traceable to internal calibration protocols aligned with ISO/IEC 17025–compliant laboratory practices.

Key Features

• High-fidelity digital PID temperature controller with real-time numeric display and Bias correction function for fine-tuning offset deviations
• Dual-layer door assembly featuring 5 mm thick tempered safety glass and dual silicone gasket sealing — minimizing heat loss and condensation while maximizing visibility and containment integrity
• Electropolished stainless steel interior chamber and adjustable stainless steel shelving (3 standard, up to 12 configurable), ensuring corrosion resistance, easy decontamination, and optimal air permeability
• Independent mechanical overtemperature protection circuit — physically isolated from the main controller — that triggers visual/audible alarm and cuts heating power immediately upon exceeding user-defined or factory-set safety thresholds
• Intelligent door-interlock system: halts fan and heater operation upon opening; initiates 60-second countdown before audible alert activates, reducing thermal shock to samples and operator exposure risk
• Power recovery mode with selectable auto-restart or hold-on-stop behavior after unexpected mains interruption — critical for unattended overnight or multi-day experiments
• Energy-efficient thermal insulation using CFC-free polyurethane foam (≥60 mm thickness), maintaining external surface temperature <40°C even at 65°C internal setpoint

Sample Compatibility & Compliance

The WH-400 accommodates standard microbiological vessels (Petri dishes, flasks, roller bottles, multiwell plates) and larger culture stacks without airflow obstruction. Its interior geometry and fan placement ensure laminar, non-turbulent circulation — preventing desiccation of open cultures while avoiding mechanical stress on sensitive adherent cell monolayers. The unit complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets EN 60529 IP20 ingress protection requirements. While not humidity-controlled by default, the WH-400 chassis is compatible with optional integrated humidification modules (sold separately) conforming to ISO 14644-1 Class 8 cleanroom-compatible installation standards. Documentation packages support GLP/GMP-aligned validation workflows, including IQ/OQ templates, sensor calibration logs, and alarm event history export.

Software & Data Management

The WH-400 operates as a standalone instrument with no proprietary software dependency. All operational parameters — setpoint, actual temperature, timer status, alarm history, and door-open events — are stored in non-volatile memory with timestamping. Optional RS-485 Modbus RTU interface (add-on module) enables integration into centralized lab monitoring systems (e.g., LabVantage, Siemens Desigo, or custom SCADA platforms) for remote supervision, automated data logging, and audit-trail generation compliant with FDA 21 CFR Part 11 requirements when paired with validated middleware. Event logs retain ≥1,000 entries with cyclic overwrite, supporting root-cause analysis during quality investigations.

Applications

• Mammalian and insect cell culture maintenance at 37°C ±0.2°C
• Bacterial and yeast propagation (E. coli, S. cerevisiae) under controlled thermal profiles
• Enzyme activity assays requiring precise isothermal conditions between 25°C and 60°C
• Seed germination and plant tissue culture under defined temperature regimes
• Stability testing of biopharmaceutical intermediates per ICH Q1A(R2) guidelines
• Quality control incubation for pharmaceutical raw materials per USP

FAQ

What is the maximum number of shelves supported inside the WH-400 chamber?

Up to 12 stainless steel shelves can be installed, though 3 are supplied as standard. Shelf spacing is fully adjustable in 25 mm increments.
Does the WH-400 include built-in humidity control?

No — the base WH-400 model is a temperature-only incubator. Humidity functionality requires an optional add-on module (W6031400-HUM), which integrates seamlessly and maintains RH 40–95% ±3% at 37°C.
Is the temperature sensor calibrated traceable to national standards?

Yes — each unit ships with a factory calibration certificate referencing PTB (Physikalisch-Technische Bundesanstalt) traceable references. User-performed recalibration is supported via front-panel adjustment using certified reference thermometers.
Can the WH-400 be validated for GMP environments?

Absolutely. The design supports full IQ/OQ/PQ execution. Key validation-ready attributes include alarm event logging, password-protected parameter locking, and configurable alarm thresholds — all documented in the included Validation Support Dossier.
What safety certifications does the WH-400 hold?

It carries CE marking per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), plus compliance with IEC 61010-1:2010 Edition 3.0 for laboratory electrical equipment safety.