MKN GPX-150 Digital Display Plant Growth Chamber

Overview

The MKN GPX-150 Digital Display Plant Growth Chamber is a precision-engineered environmental control system designed for reproducible, long-term cultivation of photobiological specimens under tightly regulated temperature and illumination conditions. Based on the principle of active thermoelectric regulation combined with high-efficiency LED or fluorescent lighting arrays and forced-air convection, this chamber delivers stable, uniform microclimates essential for plant physiology studies, seed germination assays, photoperiodic response analysis, BOD incubation, microbial growth profiling, and standardized environmental stress testing. Its dual-mode temperature control—supporting both illuminated (10–50 °C) and dark-cycle (5–50 °C) operation—enables simulation of diurnal cycles and seasonal transitions. The chamber complies with foundational design requirements outlined in ISO 17025-accredited laboratory infrastructure guidelines and supports GLP-aligned experimental workflows where traceable environmental parameters are critical.

Key Features

• Microprocessor-based digital temperature controller with LED display offering real-time monitoring and ±1 °C accuracy across the full operating range.
• Robust chamber architecture featuring a powder-coated carbon steel outer shell and electropolished stainless steel inner chamber—ensuring corrosion resistance, ease of decontamination, and compliance with biosafety Level 1 (BSL-1) containment expectations.
• Dual-access side doors with quick-release mechanisms facilitate routine lamp maintenance without disturbing chamber integrity or calibration stability.
• High-performance polyurethane foam insulation (≥50 mm thickness) minimizes thermal bridging and maintains energy efficiency during extended operation cycles.
• Optimized air circulation system with rear-mounted centrifugal blower and baffle-guided airflow ensures temperature uniformity of ±1 °C throughout the 150 L working volume—even at extreme setpoints.
• Integrated compressor protection circuitry includes automatic delay restart (3–5 min) after power interruption and thermal cut-off to extend refrigeration system service life.
• Double-glazed, low-emissivity tempered glass viewing door provides optical clarity while limiting radiant heat transfer and maintaining internal humidity stability.

Sample Compatibility & Compliance

The GPX-150 accommodates standard-sized plant trays (up to 380 × 260 × 120 mm), Petri dish stacks, multi-well plates, and microbiological culture vessels. Its interior dimensions (500 × 450 × 670 mm W×D×H) allow flexible shelving configuration with three adjustable stainless steel shelves (load capacity: 15 kg per shelf). The chamber meets mechanical safety requirements per IEC 61010-1:2010 for laboratory equipment and conforms to electromagnetic compatibility standards EN 61326-1:2013. While not certified to UL/CSA for North American markets out-of-the-box, it is compatible with third-party validation protocols required for ISO/IEC 17025 accreditation and FDA-regulated environmental monitoring (e.g., USP , EP 2.2.30). Optional data logging modules support 21 CFR Part 11-compliant audit trails when paired with validated software.

Software & Data Management

The GPX-150 operates via embedded firmware with no external PC dependency; however, optional RS-485 or USB-to-serial interfaces enable integration with LabVIEW, MATLAB, or custom SCADA systems for remote parameter logging and alarm notification. Time-stamped temperature and illumination status logs can be exported in CSV format for post-hoc statistical analysis (e.g., ANOVA of growth rate vs. photoperiod). Firmware supports user-defined ramp-soak profiles and up to eight programmable daily light/dark cycles—critical for circadian rhythm studies. All parameter changes are recorded with operator ID and timestamp when used with compliant external software, satisfying GLP documentation requirements for traceability.

Applications

• Controlled-environment plant phenotyping—including Arabidopsis thaliana, rice, maize, and model legumes under defined PAR spectra.
• Seed viability and germination testing per ISTA and AOSA protocols.
• Biochemical oxygen demand (BOD₅) incubation at 20 °C in accordance with ASTM D5210 and ISO 5815-1.
• Mycological culture maintenance and fungal sporulation induction under variable photoperiods.
• Algal biomass production trials requiring precise irradiance control and thermal stability.
• Toxicity screening assays (e.g., OECD 201, 202) using aquatic or terrestrial indicator species.
• Long-term stability studies of biological reagents and diagnostic kits under accelerated aging conditions.

FAQ

What is the maximum illuminance output, and is spectral distribution specified?
The chamber delivers ≥5000 lx at shelf level using standard T8 fluorescent tubes (included); spectral output depends on lamp type—cool white (6500 K) is default. Custom LED arrays with selectable PAR spectra (400–700 nm) are available as an OEM option.
Can the unit operate continuously for >30 days without maintenance?
Yes—designed for unattended operation up to 90 days under nominal load. Lamp replacement is recommended every 6,000 hours; compressor duty cycle remains <70% at 25 °C ambient.
Is validation documentation (IQ/OQ/PQ) provided?
Factory-installed calibration certificates for temperature sensors are included. Full qualification packages (including sensor mapping reports and protocol templates) are available upon request for an additional fee.
Does the chamber support CO₂ or humidity control?
No—this is a temperature- and light-controlled chamber only. Humidity remains ambient (≤85% RH); for active RH control, consider the MKN HGPX series.
What is the warranty coverage and international service support?
One-year parts-and-labor warranty from date of shipment. MKN maintains authorized service partners in Germany, Singapore, and Brazil; technical documentation is available in English, German, and Spanish.