DRETOP DW-100CA Low Temperature Incubator

Overview

The DRETOP DW-100CA Low Temperature Incubator is a precision-engineered environmental control system designed for stable, reproducible temperature regulation across a broad operational range of −20 °C to +65 °C. Unlike standard ambient or high-temperature incubators, the DW-100CA integrates dual-mode thermal management—compressor-driven refrigeration and air-jacket resistive heating—enabling seamless transition between sub-zero storage and elevated culture conditions without thermal overshoot or hysteresis. Its architecture follows ISO 13485-aligned manufacturing practices and conforms to IEC 61010-1 safety standards for laboratory equipment. The unit is routinely deployed in GLP-compliant laboratories for long-term preservation of biological reagents, cryopreserved cell stocks, temperature-sensitive pharmaceutical intermediates, and low-temperature material stability testing per ICH Q1A(R3) guidelines. Its robust thermal design supports applications where temperature integrity directly impacts assay validity—such as microbial viability assays under cold stress, enzyme kinetics at reduced activation energies, or accelerated aging studies of electronic components per MIL-STD-810H.

Key Features

• Microprocessor-controlled P.I.D. temperature regulation with 0.1 °C resolution and real-time digital display on a backlit LCD touchscreen interface
• Air-jacket heating system ensures rapid thermal response and minimizes interior condensation; independent compressor cooling provides stable sub-zero operation down to −20 °C
• Stainless steel interior chamber (304 grade) with three fully adjustable, removable shelves—optimized for autoclaving and chemical disinfection per CDC/NIH biosafety protocols
• Embedded observation window with integrated anti-fog heating element—eliminates visual obstruction during extended monitoring of low-temperature cultures or frozen sample arrays
• Mechanical key-locking door mechanism prevents unauthorized access and maintains thermal integrity during unattended operation—critical for regulated environments requiring audit-ready access control
• 25 mm diameter test port with stainless steel sealing cap enables external sensor integration, power feed-through, or real-time data logging without compromising chamber seal integrity
• Compressor protection logic includes programmable start-delay intervals and mandatory off-cycle dwell times—extending service life and reducing maintenance frequency in continuous-use settings

Sample Compatibility & Compliance

The DW-100CA accommodates standard microbiological vessels (e.g., Petri dishes, cryovials, multi-well plates), glass serum bottles, and sealed polymer containers up to 500 mL volume. Its internal geometry (480 × 390 × 780 mm) permits vertical stacking of ISO-standard 100 mm petri dishes or horizontal placement of 2 L media bottles. Chamber airflow is engineered via optimized rear-mounted axial fans and directional baffles to achieve laminar-like circulation—reducing localized stratification and supporting uniform thermal exposure per ASTM E2875-22 (Standard Practice for Performance Verification of Environmental Chambers). The unit meets CE marking requirements under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and its refrigerant complies with EU F-Gas Regulation (No. 517/2014) and EPA SNAP program criteria for low-GWP alternatives.

Software & Data Management

While the base model operates via embedded firmware without network connectivity, optional RS485 serial interface enables integration into centralized lab monitoring systems using Modbus RTU protocol. All temperature setpoints, alarms, and runtime logs are retained in non-volatile memory—ensuring full traceability during power interruption or system reset. Optional accessories—including an independent over-temperature cut-off controller (UL-listed Class A), GLP-compliant audit trail module with 21 CFR Part 11–capable electronic signatures, and thermal printer output—support regulatory submissions to FDA, EMA, or NMPA. Data export is supported via USB-to-serial adapters compatible with common LIMS platforms including LabVantage and Thermo Fisher SampleManager.

Applications

• Low-temperature microbial cultivation (e.g., psychrophilic bacteria isolation at 4–10 °C)
• Cold-chain validation of diagnostic reagents and vaccine excipients
• Environmental stress testing of PCBs and semiconductors per JEDEC JESD22-A119
• Long-term storage of restriction enzymes, RNA samples, and antibody conjugates
• Controlled degradation studies of polymers and biodegradable packaging materials
• Pre-conditioning of calibration standards prior to metrological evaluation per ISO/IEC 17025

FAQ

What is the minimum operating temperature of the DW-100CA?

The unit achieves and maintains −20 °C at ambient room temperature (25 °C, 50% RH) with standard loading (≤70% capacity).
Is the chamber humidity controlled?

No—this is a dry-air incubator. Relative humidity is not actively regulated and will vary with temperature setpoint and ambient conditions.
Can the unit be validated for IQ/OQ/PQ protocols?

Yes—DRETOP provides factory calibration certificates (NIST-traceable), and the system’s mechanical design supports third-party qualification using thermocouple mapping per Annex 15 of EU GMP Guidelines.
Does it support remote monitoring via Ethernet or Wi-Fi?

Not natively—but the optional RS485 interface allows connection to industrial gateways (e.g., Moxa EDS-G205A) for cloud-based telemetry when paired with compatible SCADA software.
What is the expected service life of the compressor under continuous operation?

Based on accelerated life testing per ISO 5171, the hermetic scroll compressor is rated for ≥30,000 hours MTBF when operated within specified ambient limits (15–32 °C) and maintained per manufacturer-recommended intervals.