ALISN CNT-150 Precision Refrigerated Incubator

Overview

The ALISN CNT-150 is a high-stability, refrigerated incubator engineered for precise temperature-controlled environments in life science laboratories. Designed around a dual-mode thermoregulatory architecture—combining proportional-integral-derivative (PID) control with adaptive fuzzy logic—the unit maintains tight thermal setpoints across its full operating range of −10 °C to +85 °C. Unlike ambient-only incubators, the CNT-150 integrates a hermetically sealed SECOP (Danfoss Group) compressor and EBM-Papst condenser fan system, enabling active cooling below ambient and delivering rapid thermal recovery (<15 min to re-stabilize after a 30-second door opening at 37 °C). Its chamber employs monolithic polyurethane foam insulation—applied via one-shot high-pressure injection—to minimize thermal bridging and ensure structural rigidity. The absence of humidity control reflects its intended use case: applications where moisture management is externally regulated or unnecessary (e.g., bacterial culture on solid media, long-term sample storage, stability testing per ICH Q1A(R3) guidelines).

Key Features

• High-fidelity temperature regulation: ±0.1 °C setpoint accuracy; uniformity of ±0.5–1.0 °C within the biologically critical 15–45 °C band, verified under ISO 15197-compliant empty-chamber test conditions (25 °C ambient, 70% RH).
• Immutable data integrity architecture: Onboard non-volatile memory stores up to 250,000 timestamped temperature readings (1-minute resolution); raw log files exported exclusively via USB to FAT32-formatted drives—no in-system editing permitted.
• Compliance-ready audit trail: 16,000-line operator activity and system alarm history, including user ID, timestamp, action type, and parameter change values—exportable as CSV via USB, aligned with FDA 21 CFR Part 11 electronic record requirements.
• Role-based access control: Administrator-configurable user hierarchy supporting five distinct profiles (e.g., Technician, Supervisor, QA Auditor), each assignable to specific functions (program editing, calibration override, log export).
• Industrial-grade thermal components: HERAEUS Pt1000 Class A temperature sensors (IEC 60751), calibrated at point-of-manufacture; no field recalibration required over typical service intervals.
• Ergonomic human-machine interface: 4.3″ capacitive touchscreen with context-sensitive soft keys, intuitive icon-driven navigation, and real-time graphical trend display of chamber temperature vs. setpoint.

Sample Compatibility & Compliance

The CNT-150 accommodates standard microbiological and cell biology workflows—including agar plate incubation (ISO 7218), antibiotic susceptibility testing (CLSI M02-A12), and environmental monitoring per EU GMP Annex 1. Its stainless-steel interior (AISI 304), smooth-radius corners, and removable shelves facilitate cleaning validation per HTM 01-05. While not certified for sterile processing, its design supports GLP-compliant operation when integrated into validated laboratory workflows. The unit meets IEC 61010-1:2010 safety standards for laboratory equipment and complies with EMC directive 2014/30/EU. It is CE-marked and RoHS 2011/65/EU compliant. Note: Humidity-sensitive protocols (e.g., mammalian cell culture requiring >95% RH) require external humidification solutions.

Software & Data Management

No proprietary PC software is required for basic operation. All configuration, monitoring, and data retrieval occur locally via the embedded HMI. For integration into centralized lab information systems (LIMS), the RS-232 and RS-485 interfaces support Modbus RTU protocol—enabling bidirectional communication with SCADA platforms or custom Python/Node-RED middleware. USB export produces plain-text CSV files compatible with Excel, MATLAB, or statistical packages (e.g., JMP, Minitab) without format conversion. Audit logs include ISO 8601 timestamps, user-defined role labels, and cryptographically unaltered event payloads—satisfying traceability requirements for ISO/IEC 17025 accreditation and internal QA audits.

Applications

• Microbial cultivation: Aerobic/anaerobic growth of Escherichia coli, Staphylococcus aureus, Candida albicans, and other ATCC reference strains per USP & EP microbiological methods.
• Pharmaceutical stability studies: Long-term and accelerated storage per ICH Q1A(R3) at controlled temperatures (e.g., 25 °C/60% RH simulated via dry-air conditioning).
• Environmental monitoring: Incubation of air/water/surface samples from cleanrooms, hospitals, and food production facilities per ISO 14644 and ISO 14698.
• Veterinary and aquaculture research: Embryo development assays, pathogen isolation from fish tissue, and feed spoilage modeling.
• QC/QA labs: Reagent and standard stock storage, positive/negative control maintenance, and method verification runs.

FAQ

Does the CNT-150 support humidity control?
No. It is a temperature-only incubator. Humidity must be managed externally using desiccants, saturated salt solutions, or standalone humidifiers.
Is remote monitoring possible via Ethernet or Wi-Fi?
Not natively. Network connectivity requires third-party serial-to-Ethernet converters interfacing with the RS-232/RS-485 ports.
Can the data logger be configured for intervals longer than 1 minute?
Yes—adjustable from 1 minute to 24 hours via the “Log Interval” setting in the Advanced Configuration menu.
What is the maximum load capacity for shelf weight?
Each standard stainless-steel shelf supports up to 15 kg uniformly distributed; optional reinforced shelves (part #CNT-SH-RF) increase this to 25 kg.
Is calibration certificate included with shipment?
A factory-issued calibration report (traceable to NIM, China) is provided; UKAS or DAkkS-accredited certificates are available upon request at additional cost.