ALISN CNT 460plus Low-Temperature Biochemical Incubator
| Brand | ALISN |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | CNT 460plus |
| Price Range | USD 7,000 – 14,000 (FOB Shanghai) |
| Cooling Method | Hermetic Compressor Cooling |
| Air Circulation | Forced Convection |
| Temperature Range | −10 °C to +90 °C |
| Temperature Accuracy | ±0.1 °C |
| Temperature Uniformity (at 37 °C) | ±0.3 °C (typical), ±0.8 °C (max across chamber) |
| Chamber Volume | 460 L |
| Display | 7-inch Full-Color TFT Touchscreen |
| Control Algorithm | PID with Fuzzy Logic Compensation |
| Data Logging | Internal non-volatile memory (3 years @ 1-min intervals) |
| Audit Trail | 16,000 entries (user actions, alarms, system events) |
| User Management | 5 configurable roles with granular permission levels (e.g., operator, technician, administrator) |
| Temperature Calibration | Multi-point offset correction (up to 9 points) |
| Compressor | SECOP (Danfoss Group), hermetic rotary type |
| Condenser Fan | EBM-Papst, EC brushless DC motor |
| Refrigerant | R134a (ODP = 0, GWP = 1,430) |
| Insulation | Monolithic polyurethane foam (≥80 mm thickness, closed-cell, density ≥38 kg/m³) |
| Door Design | Dual-glass door (outer tempered safety glass, inner laminated low-E glass), silicone-sealed viewing window (Ø50 mm port on right side) |
| Communication Interfaces | RS-232, RS-485, USB-B (host mode) |
| Language Support | English / Chinese toggle |
| Power Supply | AC 220 V ±10%, 50/60 Hz |
| Heating Capacity | 2.3 kW |
| Ambient Operating Conditions | 5–35 °C, 40–80% RH (optimal: 23 ±2 °C, 50 ±5% RH) |
| Safety Certifications | CE-marked per IEC 61010-1:2010, EN 61326-1:2013 (EMC), compliant with ISO 13485 design control principles for medical device support applications |
Overview
The ALISN CNT 460plus is a precision-engineered low-temperature biochemical incubator designed for stable, reproducible environmental control in regulated life science workflows. It operates on a dual-mode thermal management principle: active compressor-based refrigeration combined with PID-fuzzy logic temperature regulation to maintain setpoints from −10 °C to +90 °C within ±0.1 °C accuracy under steady-state conditions. Its forced convection airflow system—driven by an EBM-Papst EC fan and optimized baffle geometry—ensures uniform temperature distribution (±0.3 °C typical at 37 °C) across the full 460 L stainless-steel chamber. The unit meets functional requirements for cold-chain integrity in vaccine storage, microbial cryocultivation, enzyme stability assays, and long-term cell line preservation where thermal drift must remain below critical thresholds defined in USP , ISO 20387:2018 (biobanking), and WHO TRS No. 961 Annex 9.
Key Features
- Hermetic SECOP (Danfoss) compressor with variable-speed drive, enabling rapid thermal recovery (<15 min to re-stabilize after 30-sec door opening at 4 °C)
- Monolithic polyurethane insulation (≥80 mm thick, density ≥38 kg/m³), delivering >40% energy reduction versus conventional foamed chambers per EN 16877-2 test protocol
- 7-inch capacitive touchscreen with intuitive icon-driven interface, supporting real-time temperature curve visualization (10-hour rolling buffer) and historical trend replay
- Immutable audit trail system storing 16,000 time-stamped entries—including user logins, parameter changes, alarm triggers, and door events—with cryptographic write protection and USB-exportable CSV files
- Multi-point temperature calibration (up to 9 reference offsets) compensating for spatial gradients inherent in large-volume chambers, validated per ASTM E2874-22 Section 6.3
- Dual-glass door assembly with low-emissivity inner pane and silicone-sealed Ø50 mm utility port for sensor feedthroughs or gas lines without compromising thermal integrity
- Comprehensive safety architecture: overtemperature cutoff (independent hardware limiter), compressor high-pressure lockout, ground-fault detection, door-open alarm with auto-pause, and sensor fault redundancy
Sample Compatibility & Compliance
The CNT 460plus accommodates standard laboratory vessels—including stacked Petri dishes, multi-well plates, roller bottles, and 2 L bioreactor bags—on two adjustable 304 stainless-steel shelves (load capacity: 15 kg/shelf). Its chamber geometry (750 × 1105 × 560 mm W×H×D) permits vertical stacking of ISO-standard incubator racks. The unit complies with IEC 61010-1:2010 for electrical safety and EN 61326-1:2013 for electromagnetic compatibility. While not certified as a medical device, its design adheres to ISO 13485:2016 clause 7.5.10 (production environment controls) and supports GLP/GMP-aligned validation protocols including IQ/OQ/PQ documentation templates aligned with FDA 21 CFR Part 11 Annex 11 requirements for electronic records.
Software & Data Management
Internal firmware implements deterministic real-time logging at user-selectable intervals (1 min default), storing timestamps, chamber setpoint, actual temperature (dual-sensor averaging), and alarm status in EEPROM with CRC-32 checksum validation. All exported data files (.csv) are digitally signed and cannot be edited post-generation—a requirement for ALCOA+ data integrity compliance. USB host interface enables direct transfer to external drives; RS-485 Modbus RTU support allows integration into centralized facility monitoring systems (e.g., Siemens Desigo CC, Honeywell Experion PKS). The embedded OS supports bilingual operation (English/Chinese) without firmware reload, and retains all configuration and log history during power loss.
Applications
- Vaccine and monoclonal antibody storage at 2–8 °C with continuous temperature mapping validation (per WHO PQS guidelines)
- Psychrophilic bacterial culture (e.g., Pseudomonas fluorescens, Colwellia psychrerythraea) requiring sustained sub-zero growth conditions
- Enzyme kinetics studies under controlled thermal ramping (programmable 30-segment profiles)
- Seed germination assays in agricultural biotechnology with humidity-independent cold stratification
- Stability testing of diagnostic reagents per ICH Q1A(R2) long-term storage conditions (−20 °C ±5 °C)
- Pre-incubation of cryopreserved PBMCs prior to flow cytometry analysis
FAQ
Does the CNT 460plus support remote monitoring via Ethernet or Wi-Fi?
No—network connectivity is limited to RS-232, RS-485, and USB-B interfaces. Ethernet or wireless modules are not supported in this model.
Is the temperature sensor traceable to NIST standards?
The integrated HERAEUS Pt100 sensors are factory-calibrated against NIST-traceable reference standards (certificate included); field recalibration requires authorized service center tools.
Can the incubator operate continuously at −10 °C in ambient environments above 30 °C?
Continuous operation at minimum setpoint is guaranteed only when ambient temperature remains ≤25 °C per IEC 60068-3-5; performance degrades above 30 °C due to condenser heat rejection limits.
What is the maximum allowable load mass before thermal uniformity specifications no longer apply?
Uniformity metrics are specified for empty chamber per ISO 15333:2021 Annex B; loading beyond 60% volume occupancy may require site-specific mapping per EU GMP Annex 15.
Are third-party validation services available through ALISN or its distributors?
Yes—certified validation packages (IQ/OQ/PQ) are offered by ALISN’s global partner network, including documented risk assessments and 21 CFR Part 11-compliant electronic signatures.
