WIGGENS WLI-300T Plant Growth Chamber

Overview

The WIGGENS WLI-300T Plant Growth Chamber is a precision-engineered environmental control system designed for reproducible, long-term plant cultivation under tightly regulated photoperiodic, thermal, and hygric conditions. Built to meet the rigorous demands of academic plant physiology labs, agricultural biotechnology research, and controlled-environment phenotyping studies, this chamber employs a dual-stage temperature control architecture coupled with triple-side fluorescent illumination to minimize thermal gradients induced by radiant heat from lamps. Its microprocessor-based PID controller maintains setpoint stability within ±0.4°C (at 25°C, humidification off) across the full working volume—critical for experiments requiring high inter-replicate consistency. The chamber operates without ozone-depleting refrigerants (R134a or R600a alternatives), aligning with EU F-Gas Regulation (EU No 517/2014) and supporting sustainability-compliant laboratory infrastructure.

Key Features

• Ergonomic double-door design with tempered inner glass panel sealed via food-grade silicone gasket and outer magnetic door seal—ensuring both visual accessibility and vapor-tight integrity.
• Adjustable stainless-steel shelving system allows vertical reconfiguration to accommodate tall specimens (e.g., maize, Arabidopsis rosettes, or hydroponic towers) without compromising airflow uniformity.
• Triple-side fluorescent lamp array (32 × 18 W T5 tubes) delivers spatially homogeneous illuminance up to 20,000 lux at shelf level; electronic high-frequency ballasts ensure flicker-free, stable output over >15,000 hours of operation.
• Integrated water reservoir with transparent level indicator and audible/visual low-level alarm prevents operational interruption during extended growth cycles.
• Four-position castor wheels with locking brakes enable safe relocation within shared core facilities while maintaining structural rigidity during operation.
• Comprehensive safety suite includes automatic power cutoff upon overheating (>55°C), door-open event detection, ground-fault circuit interruption (GFCI), and overcurrent protection compliant with IEC 61000-4-5 surge immunity standards.

Sample Compatibility & Compliance

The WLI-300T supports diverse botanical models—from seedlings and tissue cultures to mature flowering plants—and accommodates standard growth vessels including Magenta boxes, Petri dishes, multi-well plates, and 1-L Erlenmeyer flasks. Its internal chamber geometry (510 × 540 × 1100 mm) permits unobstructed air circulation per ASHRAE Guideline 18-2022 for biological containment enclosures. Humidity control is validated across two operational bands: 40–80% RH at 20–35°C and 70–90% RH at 36–50°C—enabling simulation of tropical, temperate, or drought-stress microclimates. All electrical components comply with CE marking requirements (2014/30/EU EMC Directive and 2014/35/EU Low Voltage Directive); firmware adheres to ISO/IEC 17025:2017 traceability principles for calibration data logging.

Software & Data Management

While the WLI-300T operates via an intuitive front-panel interface with real-time display of temperature, humidity, light intensity, and alarm status, optional RS-485 Modbus RTU connectivity enables integration into centralized building management systems (BMS) or LabVantage/LabWare LIMS environments. Logged parameters—including setpoints, deviations, and event timestamps—are stored internally for ≥30 days and exportable via USB-C for audit-ready documentation. For GLP/GMP-aligned workflows, optional validation packages include IQ/OQ documentation templates aligned with ASTM E2500-13 and FDA 21 CFR Part 11 electronic record requirements (user access controls, audit trails, electronic signatures).

Applications

• Photomorphogenesis and circadian rhythm studies under programmable light/dark cycles.
• Abiotic stress screening (heat, drought, high-light) using precisely ramped temperature/humidity profiles.
• Pre-acclimatization of in vitro-grown plantlets prior to greenhouse transfer.
• Controlled pollination experiments requiring synchronized flowering phenology.
• Secondary metabolite induction assays (e.g., anthocyanin, alkaloid production) under defined spectral and thermal regimes.
• Microbial-plant interaction studies where host physiology must remain decoupled from ambient lab fluctuations.

FAQ

What is the maximum sustained illuminance achievable at the lowest shelf position?
Up to 20,000 lux (measured at 15 cm below lamp plane, center location), verified using NIST-traceable lux meter (ILT950).
Can the WLI-300T maintain humidity at 30°C without condensation on observation windows?
Yes—the dual-seal door design and low-emissivity tempered glass minimize surface cooling; internal dew point is actively managed via proportional-integral humidity control.
Is CO₂ supplementation supported natively or only as an after-market retrofit?
CO₂ control is available exclusively as factory-installed option (WLI-300TH model) with NDIR sensor, mass flow controller, and fail-safe venting logic—no field retrofit kits are certified.
How frequently does the system require recalibration of temperature and humidity sensors?
Annual verification is recommended per ISO/IEC 17025; built-in sensor diagnostics flag drift >±0.5°C or >±5% RH for technician review.
Does the chamber support custom light spectrum tuning via LED replacement?
No—fluorescent tube configuration is fixed per model; spectral customization requires upgrading to WIGGENS WLI-LED series chambers with tunable RGB+far-red diode arrays.