MKN SPX-150 Intelligent Biochemical Incubator

Overview

The MKN SPX-150 Intelligent Biochemical Incubator is a precision-controlled, dual-mode (heating and cooling) environmental chamber engineered for stable, reproducible temperature maintenance in life science laboratories. It operates on a combined thermoelectric assist and sealed refrigeration cycle architecture, enabling accurate thermal regulation across a biologically relevant range of 5–50 °C. Unlike basic incubators relying solely on resistive heating, the SPX-150 integrates active cooling to support low-temperature cultivation protocols—including psychrophilic microorganism growth, enzyme stability studies, and cold-adapted cell line maintenance—without requiring external chillers or cryogenic media. Its chamber design adheres to fundamental principles of thermal homogeneity: the forced-air convection system employs a uniquely engineered blower geometry and rear-mounted air diffuser to minimize vertical and horizontal thermal gradients, achieving ±0.5 °C uniformity throughout the full 150 L working volume. This performance aligns with ISO 15197:2013 and ASTM E2917-21 requirements for controlled-environment equipment used in method validation and stability testing.

Key Features

• Microprocessor-based PID temperature controller with LED digital display (optional high-contrast LCD interface available), offering real-time setpoint and actual temperature readout with resolution of 0.1 °C
• Robust chamber construction: exterior carbon steel housing with electrostatic epoxy powder coating; interior 304 stainless steel chamber for corrosion resistance, cleanability, and compliance with GLP laboratory hygiene standards
• High-efficiency polyurethane foam insulation (≥60 mm thickness) minimizing thermal leakage and improving energy efficiency under continuous operation
• Dual-mode thermal management system combining Peltier-assisted pre-cooling and hermetically sealed R134a refrigeration circuit, optimized for compressor longevity via programmable delay-on-restart and brownout protection circuitry
• Front-facing double-layer hollow glass door with anti-fog coating and integrated LED interior lighting, enabling non-intrusive sample observation without thermal disturbance
• Over-temperature cut-off and audible/visual alarm system compliant with IEC 61010-1 safety requirements for laboratory equipment

Sample Compatibility & Compliance

The SPX-150 accommodates standard laboratory vessels including Petri dishes (up to 150 mm diameter), multi-well plates (6–96-well), culture flasks (T25–T175), and glass serum bottles. Its chamber dimensions (500 × 450 × 650 mm W × D × H) allow flexible rack configurations and optional shelf customization (stainless steel wire shelves included). The unit meets electromagnetic compatibility (EMC) per EN 61326-1 and electrical safety per EN 61010-1. While not humidity-controlled, its sealed chamber design maintains internal relative humidity >70% at 37 °C (measured per ISO 8573-1 Class 4), suitable for short-to-medium term microbial and tissue culture applications. Documentation supports IQ/OQ validation protocols and satisfies baseline requirements for ISO/IEC 17025-accredited labs performing environmental condition monitoring.

Software & Data Management

The SPX-150 operates as a standalone instrument with local control only; no proprietary software or USB/RS-232 connectivity is included in the base configuration. However, its analog voltage output (0–5 V DC proportional to chamber temperature) enables integration into third-party data acquisition systems (e.g., LabVIEW, WinCC, or SCADA platforms) for continuous logging and audit trail generation. When deployed in regulated environments (e.g., pharmaceutical QC labs), users may implement external validation-compliant recording solutions meeting FDA 21 CFR Part 11 requirements—including electronic signatures, time-stamped event logs, and user-access-level controls—for temperature deviation reporting and trend analysis.

Applications

• Bacterial and fungal cultivation (e.g., E. coli, S. cerevisiae, A. niger) across mesophilic and moderate psychrophilic ranges
• Enzyme activity assays requiring precise thermal stabilization during kinetic measurements
• Environmental simulation studies in ecotoxicology and bioremediation research
• Seed germination and plant tissue culture under controlled photoperiod-independent conditions
• Stability testing of diagnostic reagents and biological standards per USP and ISO 13485 Annex A guidelines
• Pre-incubation conditioning of biosensors and immunoassay plates prior to assay execution

FAQ

Does the SPX-150 support humidity control?
No. This model is a temperature-only incubator. Humidity control requires optional add-on modules not included in the standard configuration.
Can the unit operate continuously for 72+ hours without performance degradation?
Yes. Rated for uninterrupted operation under ambient conditions ≤40 °C and ≤85% RH. Compressor duty cycle and thermal load are engineered for 100% duty cycle within specified temperature range.
Is calibration certificate provided with shipment?
A factory calibration report (traceable to NIM China) is included. Full ISO/IEC 17025 calibration with uncertainty budget requires third-party service.
What is the maximum shelf loading capacity per level?
Each stainless steel shelf supports up to 15 kg evenly distributed. Total chamber load must not exceed 30 kg to maintain thermal uniformity specifications.
Are replacement parts such as fans, sensors, or compressors available through MKN authorized channels?
Yes. Critical spares—including PT100 temperature sensor assemblies, centrifugal blowers, and sealed compressor units—are stocked by MKN’s international distributor network with lead times under 14 business days.