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 incubation of biological and biochemical samples under tightly regulated thermal conditions. Utilizing a hybrid temperature regulation architecture—combining Peltier-based fine-tuning with a hermetically sealed refrigeration compressor—the unit achieves high-fidelity thermal control across its operational range of 5–50 °C. Designed in accordance with fundamental requirements for laboratory-grade incubation equipment, the SPX-150 supports applications demanding long-term stability, minimal thermal gradient deviation, and continuous unattended operation. Its robust mechanical design, ISO-compliant construction materials, and adherence to IEC 61010-1 safety standards make it suitable for use in GLP-compliant laboratories, academic research facilities, and quality control environments governed by regulatory frameworks including ISO/IEC 17025 and FDA 21 CFR Part 11–aligned data integrity protocols.

Key Features

• Microprocessor-based PID temperature controller with ±0.5 °C accuracy and real-time LED digital display (LCD optional); supports programmable ramp-hold profiles via firmware upgrade.
• Forced-air convection system with rear-mounted centrifugal blower and optimized baffle geometry ensures uniform temperature distribution (±0.5 °C across chamber volume), validated per ASTM E145–22 Annex A3 methodology.
• Double-layer insulated chamber: 50 mm thick polyurethane foam (thermal conductivity ≤0.022 W/m·K) between outer carbon steel shell (powder-coated) and inner 304 stainless steel liner (electropolished finish, Ra ≤0.8 µm).
• Tempered double-glazed observation door with anti-fog coating and integrated LED illumination (3000 K CCT, CRI >80) enables non-invasive sample monitoring without thermal disturbance.
• Compressor protection circuitry includes automatic 3-minute restart delay after power interruption and over-temperature cut-off at 65 °C, compliant with EN 60335-1 safety requirements.
• Continuous operation capability (24/7 duty cycle) with low-noise operation (<52 dB(A) at 1 m) and energy-efficient power consumption (≤500 W nominal).

Sample Compatibility & Compliance

The SPX-150 accommodates standard microbiological and cell culture vessels—including Petri dishes (up to 150 mm), multi-well plates (6–96-well), Erlenmeyer flasks (up to 2 L), and test tube racks—within its 150 L working volume. Chamber dimensions (W × D × H: 520 × 450 × 650 mm) permit vertical stacking of stacked shelf configurations (3 adjustable stainless steel shelves included). The unit meets essential performance criteria outlined in ISO 13408-1 (aseptic processing), USP (sterile product storage), and CLSI M22-A3 (microbiological incubator validation). Optional IQ/OQ documentation packages are available to support GMP facility commissioning and audit readiness.

Software & Data Management

While the base model features standalone microcontroller operation, firmware-upgradable versions support RS-485 Modbus RTU communication for integration into centralized lab management systems (LIMS). Data logging (temperature only) is available via optional USB data logger (1-second sampling interval, 32 GB internal memory, CSV export). All recorded data include timestamp, setpoint, actual value, and alarm status flags—enabling traceability required under GLP and 21 CFR Part 11 when paired with validated third-party software platforms. Audit trail functionality, electronic signature support, and user access levels (admin/operator) can be implemented via external middleware.

Applications

• Bacterial and fungal culture maintenance (e.g., E. coli, S. aureus, A. niger) per ISO 7218 and AOAC Official Methods.
• Enzyme activity assays and protein stability studies requiring precise sub-ambient or elevated incubation (e.g., 15 °C for cold-adapted proteases; 37 °C for mammalian cell line expansion).
• Environmental simulation testing of biodegradable materials per ASTM D5338 and ISO 14855.
• Seed germination and plant tissue culture under controlled photoperiod-independent thermal regimes.
• QC stability testing of pharmaceutical intermediates and diagnostic reagents per ICH Q1A(R2) guidelines.

FAQ

What is the recommended calibration frequency for the SPX-150?
Annual calibration against NIST-traceable reference thermometers is advised; internal sensor verification using calibrated PT100 probes is supported via service mode.
Can the incubator operate reliably at 5 °C in a 35 °C ambient lab?
Yes—its compressor-assisted cooling system maintains setpoint stability within specification under specified ambient conditions (0–40 °C, <85% RH).
Is the stainless steel chamber electropolished to meet pharmaceutical cleanliness standards?
The 304 SS interior is electropolished to Ra ≤0.8 µm, satisfying ASME BPE-2022 surface finish requirements for non-sterile process equipment.
Does the unit comply with electromagnetic compatibility (EMC) directives?
Yes—certified to EN 61326-1 (industrial environment) and EN 55011 Class B emission limits.
What documentation is provided for regulatory submissions?
Standard delivery includes Factory Acceptance Test (FAT) report, material certificates (EN 10204 3.1), and electrical safety test records. IQ/OQ/PQ templates available upon request.