AR-41L2

Percival Scientific SciBrite LED Reach-In Arabidopsis Growth Chamber Model AR-41L2

Flexible, Low-Light Growth Control with Increased Vertical Clearance

The Percival Scientific AR-41L2 is a compact reach-in Arabidopsis growth chamber designed for researchers who require greater vertical growing height per shelf while maintaining precise environmental control. Frequently used for Arabidopsis thaliana, tobacco, and other low-light plant species, the AR-41L2 supports a wide range of plant growth applications in academic, government, and commercial research environments.

With high-uniformity LED lighting, stable airflow, and advanced experiment protection, the AR-41L2 provides dependable performance for short- and long-term plant growth studies.

Features

Greater Vertical Growing Space
Two-tier shelving allows for a maximum growing height of approximately 22.6″ per tier, accommodating taller plants, extended growth cycles, or specialized experimental setups.

Uniform, Plant-Optimized LED Lighting
SciWhite™ LEDs enhanced with red spectrum tiles deliver even illumination across each shelf, producing up to 405 µmol m²/s at 6″ for low-light plant growth applications.

Advanced Control with IntellusUltra™
The IntellusUltra™ Controller provides intuitive, programmable control of temperature, lighting, humidity, and CO₂ (optional), supporting diurnal, step, ramp, and non-circadian research protocols.

Built-In Experiment Protection
Adjustable high and low temperature safety limits with audible and visual alarms automatically shut down chamber power during excursions and self-reset once conditions return to range.

Core Technical Highlights

Environmental & Lighting

• Lighting System:
  SciWhite™ LED array with enhanced red spectrum
  Up to 405 µmol m²/s at 6″, dimmable 10–100% in 1% increments

• Lighting Control:
  Fully programmable through the IntellusUltra™ Controller

Capacity & Interior

• Interior Volume: 37.2 cu ft

• Work Area: 13.6 sq ft across two tiers

• Shelving: Two tiers of solid stainless-steel shelves

  • Shelf size: 27″ D × 36.3″ W

  • Lower shelf slides on stainless steel rail assemblies

  • Adjustable in ½″ increments when not mounted on rails

  • Maximum growing height: 22.6″ per tier

Airflow & Circulation

• Rear wall plenum airflow system

• Conditioned air moves horizontally across each shelf for uniform exposure

• Air returns vertically through the space between shelves and door back to the unit cooler

• Designed to reduce microclimates and ensure consistent growth conditions

Construction & Serviceability

• Interior:

  • 26-gauge smooth galvanized white side walls and top

  • Reinforced with 24-gauge backer plates

  • 24-gauge #304-4 stainless steel floor

• Exterior:

  • 24-gauge smooth white galvanized steel

  • NSF-compliant seam design

• Insulation:

  • 2″ foamed-in-place non-CFC urethane insulation

  • 93% closed cell, R-value 12.5, K-value 0.16

  • Density: 2.2 lbs/cu ft

• Refrigeration:

  • Self-contained air-cooled condensing unit

  • Hot gas bypass system for continuous compressor operation, close temperature control, and extended compressor life

  • Ceiling-mounted evaporator with twin circulation fans

  • Heat rejection: 3500 BTU/hr

• Mobility:

  • Caster assembly with adjustable leveling legs for uneven lab floors

Access & Usability

• Single full-height access door (36.7″ W × 57.5″ H) with magnetic gasket

• One airtight 1.25″ access port on right-hand wall

• Stainless steel chamber floor with integrated drain and hose assembly

• High-reflectance, environmentally friendly white powder-coated interior and exterior for optimal light efficiency

Typical Applications

• Arabidopsis thaliana growth studies

• Tobacco cultivation

• Low-light plant physiology research

• Taller plant or extended growth experiments

• Flexible, space-efficient plant growth applications

The AR-41L2 offers the same environmental precision as multi-tier models while providing expanded vertical clearance, making it an excellent choice for researchers who need flexibility without increasing chamber footprint.

Optional Upgrades

• Additive humidity control with sensor

• Dehumidification system with sensor

• CO₂ enrichment package

• IntellusUltra™ Connect (remote monitoring)

• Android-based touchscreen interface

• Self-contained water-cooled condensing unit

• Dry alarm contacts

• Dimmable or alternate LED lighting configurations

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.