HUXI HICE-4 Electronic Refrigerated/Heating Block

Overview

The HUXI HICE-4 Electronic Refrigerated/Heating Block is a compact, microprocessor-controlled thermal management system engineered for precise, stable temperature regulation across life science workflows. Unlike conventional ice baths or passive cooling accessories, the HICE-4 employs solid-state Peltier thermoelectric modules for bidirectional thermal control—enabling rapid, contamination-free heating and cooling without refrigerants, compressors, or consumables. Its operational range spans from −10 °C to +106 °C, with typical use cases centered on maintaining reagents, enzymes, nucleic acids, and cell suspensions at biologically critical temperatures—including the widely adopted 4 °C standard for short-term sample stabilization during molecular biology procedures such as PCR setup, electrophoresis loading, ELISA plate handling, and enzymatic digestion. The device integrates real-time thermal feedback via high-resolution NTC sensors and closed-loop PID control architecture, delivering consistent thermal performance essential for assay reproducibility and regulatory compliance in GLP- and GMP-aligned environments.

Key Features

• One-touch 4 °C preset mode for immediate initiation of cold-stage workflows—eliminating manual parameter entry and reducing operator variability.
• 4.3-inch capacitive TFT touchscreen with dynamic iconography, intuitive gesture-based navigation, and ambient-light-adaptive brightness for clear visibility under lab lighting conditions.
• High-fidelity thermal control: ≤ ±0.5 °C accuracy and ≤ ±0.3 °C intra-chamber uniformity across the standard 35-position 2.0 mL tube block—validated per ISO 17025 traceable protocols.
• Dual-directional thermal response: heats from ambient to 100 °C in ≤15 minutes; cools from 25 °C to 4 °C in ≤10 minutes—enabling rapid transition between reaction and storage phases.
• Integrated safety architecture: over-temperature cutoff, self-diagnostic fault detection with audible alarm, automatic error logging, and hardware-level fuse protection (250 V, 3 A).
• Transparent polycarbonate lid constructed from medical-grade, heat-resistant, BPA-free material—mechanically interlocked to prevent loss and rated for continuous operation up to 106 °C.
• Expandable thermal platform: supports interchangeable aluminum blocks (models A–N) for diverse vessel formats including 0.2 mL PCR strips, 15 mL/50 mL conical tubes, microplates, and custom geometries.

Sample Compatibility & Compliance

The HICE-4 accommodates common laboratory consumables used in molecular diagnostics, protein biochemistry, and cell culture applications—including thin-walled PCR tubes, low-binding microcentrifuge tubes, deep-well plates, and enzyme storage vials. Its non-vibrational, silent Peltier operation ensures minimal mechanical disturbance to temperature-sensitive biomolecules. All thermal profiles are fully repeatable and documented in accordance with ISO/IEC 17025 calibration requirements. The unit complies with CE marking directives (2014/30/EU EMC and 2014/35/EU LVD), carries RoHS 2.0 certification, and meets IEC 61010-1 safety standards for laboratory electrical equipment. Optional USB interface enables audit-trail-capable data export compatible with 21 CFR Part 11–compliant electronic lab notebook (ELN) systems.

Software & Data Management

While the HICE-4 operates autonomously via its embedded firmware, optional USB connectivity allows integration with Windows-based host software for remote monitoring, scheduled temperature sequencing, and time-stamped event logging. Exported CSV files include timestamped temperature readings, setpoint history, alarm triggers, and module identification—supporting retrospective analysis for internal QA reviews or external regulatory submissions. Firmware updates are delivered via secure HTTP download and verified using SHA-256 checksums. No cloud dependency or proprietary runtime environment is required; all control logic resides onboard the device’s ARM Cortex-M4 microcontroller.

Applications

• Short-term stabilization of restriction enzymes, ligases, reverse transcriptases, and Taq polymerases prior to reaction assembly.
• Maintaining chilled buffers and electrophoresis reagents during gel casting and loading to prevent premature polymerization or denaturation.
• Pre-cooling microcentrifuge tubes and pipette tips to minimize thermal shock during cryopreservation workflows.
• Standardizing incubation temperatures for antibody binding steps in immunoassays where ambient fluctuations compromise signal-to-noise ratios.
• Serving as a benchtop alternative to ice-water baths in ISO 15189-accredited clinical laboratories seeking reduced microbial risk and improved workflow ergonomics.

FAQ

Does the HICE-4 require regular calibration?
Yes—annual verification against NIST-traceable reference thermometers is recommended. The unit includes built-in offset calibration functionality accessible through service mode.
Can the HICE-4 be used inside a biosafety cabinet?
Yes, provided adequate ventilation clearance (≥5 cm on all sides) is maintained and the cabinet’s airflow is not impeded by the unit’s heat dissipation profile.
Is the 4 °C preset programmable or fixed?
It is factory-fixed but can be overridden manually at any time via touchscreen input; users may also define and save up to three custom temperature profiles.
What maintenance does the HICE-4 require?
No routine servicing is needed beyond periodic cleaning of the aluminum block surface with 70% ethanol and inspection of the thermal interface between module and housing.
Does the optional USB interface support real-time data streaming?
Yes—the host software polls temperature and status registers at 1 Hz intervals and buffers data locally during transient network outages.