Percival Scientific Seed Germination Chamber – Model GR‑41L
High-Density Seed Germination and Development Control
The GR‑41L is designed for seed germination, early plant development, and other controlled growth studies. With 15 tiers of wire shelving and programmable linear LED lighting, it provides precise environmental control for uniform growth conditions, while maintaining easy access and visibility.
Features
IntellusUltra® Controller: Android-based touchscreen for 24/7 monitoring and control of temperature, lighting, humidity, and optional CO₂ enrichment. Supports step/ramp programming, deviation alarms, and event logging.
Lighting System: Vertically mounted linear LEDs, intensity programmable up to 120 μmoles/m²/s at 6″, dimmable 5–100% output for optimal seedling growth.
Airflow & Circulation: Conditioned air flows horizontally through the chamber, maintaining uniform temperatures across all tiers.
Shelving: 15 tiers of white epoxy-coated steel wire shelving (27″D × 32.6″W) with 2.6″ clearance between shelves, sliding easily on stainless steel rails.
Refrigeration & Temperature Control: Self-contained air-cooled condensing unit with hot gas bypass ensures precise temperature control, extended compressor life, and no ice buildup. Ceiling-mounted evaporator coils with dual fans for uniform cooling.
Experiment Protection: Adjustable high/low temperature limits with audible and visual alarms; automatic reset ensures safe operation.
Durable Construction: Interior of 22-gauge steel, exterior 18/26-gauge steel, fully welded seams, polished stainless-steel floor with floor drain and hose assembly, caster assembly, and leveling legs included.
Core Technical Highlights
- Exterior Dimensions: 41″W × 33.6″D × 77.2″H (requires 6″ clearance on right)
- Interior Space: 37.2 cu ft
- Work Area: 96.4 sq ft
- Growing Height: 2.6″ per shelf
- Temperature Range: 5°–44 °C lights ON (±0.5 °C), 2°–44 °C lights OFF (±0.5 °C)
- Light Intensity: 120 μmoles/m²/s at 6″ from LED tiles
- Shelving: 15 tiers of epoxy-coated wire shelves, adjustable in ½″ increments
- Insulation: 2″ thick CFC-free woodless construction with R-value of 12.5
- Door & Ports: Single full-access door 36.8″ × 57.5″; two 1.25″ diameter access ports on right-hand wall
- Refrigerant: R-449a, dual-coil constant temperature control
- Heat Rejection: 2,856 BTU/hr
- Finish: High-reflectivity, environmentally friendly, powder-coated interior and exterior
Typical Applications
- Seed germination and early plant development
- Controlled growth studies requiring medium shelf density
- Experiments requiring precise light and temperature control
- Seedling stress response studies
Optional Upgrades
- Additive Humidity Control with Sensor
- Dehumidifier with Sensor
- CO₂ Enrichment Package
- Dimmable or LED Lighting Upgrades
- IntellusUltra Connect
- Android-Based Touchscreen
- Self-Contained Water-Cooled Condensing Unit
- Dry Alarm Contacts
- Additional Receptacles
Contact us for custom configurations to match your research workflow.
Expert Guidance You Won’t Get From Big Distributors
Unlike broad catalog sellers, we specialize in controlled environment systems with deep application support. Our team understands the experimental nuances: from controller programming to lighting strategies and environmental uniformity. We help you match chamber options to your research goals and ensure you get the right system.
Ready to refine your setup or get a tailored quote? Contact us for expert support and configuration advice.
