Hanuo HNB80 Biological Indicator Incubator

Overview

The Hanuo HNB80 Biological Indicator Incubator is a compact, microprocessor-controlled metal block incubator engineered specifically for the standardized thermal incubation of biological indicators (BIs) used in sterilization process validation and routine monitoring. It operates on the principle of precise conductive heating via an aluminum alloy heating block, delivering rapid, uniform, and stable temperature control across interchangeable well modules. Designed to meet the thermal requirements of both steam sterilization (e.g., Geobacillus stearothermophilus-based BIs incubated at 56°C or 60°C) and ethylene oxide (EO) sterilization (e.g., Bacillus atrophaeus-based BIs incubated at 37°C), the HNB80 supports ISO 11138-1, ISO 11138-2, ISO 11138-3, and AAMI ST33-compliant incubation protocols. Its all-metal construction, low thermal mass, and optimized heat transfer geometry ensure minimal overshoot and high reproducibility—critical for GLP- and GMP-aligned microbiological quality control laboratories.

Key Features

• Compact footprint (145 × 113 × 110 mm) and lightweight design (0.8 kg), enabling benchtop deployment in space-constrained cleanrooms, QC labs, or mobile validation units.
• High-precision digital PID temperature control with accuracy of ±0.3°C across the full operating range (ambient +5°C to 100°C); temperature uniformity ≤±0.3°C across module wells at 40°C and 100°C.
• Fast thermal response: heats from 20°C to 56°C in ≤6 minutes—reducing turnaround time for daily BI incubation cycles.
• Real-time LED display showing current temperature (0.1°C resolution) and countdown timer (1 minute to 99 hours), supporting unattended operation during extended incubation periods.
• Interchangeable aluminum modules with six standardized configurations (M-A through M-F), accommodating common BI vial diameters (Φ9–Φ16 mm), including conical-bottom formats for enhanced sedimentation control.
• Dual-layer safety architecture: independent over-temperature cutoff circuit + 24 V DC internal power conversion, eliminating mains voltage exposure at the heating block—enabling safe use with vehicle inverters or backup power systems.
• Transparent polycarbonate safety lid with integrated latch allows continuous visual monitoring without compromising thermal stability or sterility integrity.

Sample Compatibility & Compliance

The HNB80 is validated for use with commercially available biological indicators from major global suppliers—including Mesa Labs, Steris, 3M Attest, Cantel Medical (formerly Minntech), and SGM Italia—as well as domestic Chinese BI manufacturers compliant with YY/T 0698.5 and GB 18278 series standards. Each module maintains traceable thermal performance per ISO/IEC 17025 calibration guidelines. The device supports audit-ready documentation workflows: temperature setpoint, actual block temperature, incubation duration, and module ID can be manually logged in laboratory notebooks or integrated into electronic batch records. While the HNB80 itself does not provide automated data export, its stable thermal profile meets prerequisite conditions for FDA 21 CFR Part 11-compliant systems when paired with validated external data loggers.

Software & Data Management

The HNB80 operates as a standalone hardware platform with no embedded firmware-based software or network connectivity. All operational parameters are configured locally via tactile membrane buttons and displayed on a high-contrast LED screen. This minimalist control architecture eliminates cybersecurity risks, reduces validation burden, and ensures long-term operational continuity without dependency on proprietary drivers or OS updates. For laboratories requiring electronic record retention, the unit is fully compatible with third-party calibrated temperature data loggers (e.g., Omega OM-EL-USB-TC, Testo 176 T4) that record block temperature at user-defined intervals (1–60 sec). These logs may be imported into LIMS or ELN platforms for trend analysis, deviation investigation, and regulatory submission support.

Applications

• Routine incubation of spore strips, self-contained BIs, and suspension-based indicators following steam autoclave or EO sterilizer qualification and requalification cycles.
• Verification of incubator performance prior to BI challenge studies (e.g., PQ tests per ISO 17665-1 Annex C).
• Field-deployable incubation for remote healthcare facilities performing point-of-use sterilization verification.
• Educational use in pharmaceutical microbiology training programs focusing on sterilization science and aseptic processing fundamentals.
• Supporting environmental monitoring programs where rapid, portable BI readout is required outside centralized QC labs.

FAQ

Does the HNB80 comply with ISO 11138 standards for BI incubation?
Yes—the thermal performance specifications (accuracy, uniformity, stability) align with the incubation requirements defined in ISO 11138-1 (general requirements) and product-specific parts for steam and EO indicators.
Can the HNB80 be used for incubating non-BI microbiological samples?
It is not recommended for general-purpose microbial culture due to absence of humidity control, CO₂ regulation, or airflow management; it is purpose-built for dry-heat incubation of sealed BI vials.
Is calibration certification included with purchase?
A factory calibration report (traceable to NIM, China) is provided; users must perform periodic in-house verification using a NIST-traceable thermometer per their SOPs.
What maintenance is required?
Wipe-down with 70% ethanol after each use; inspect module wells for residue or corrosion quarterly; verify temperature accuracy annually or per equipment qualification schedule.
Are replacement modules available separately?
Yes—all six module types (M-A through M-F) are stocked and sold individually with serialized calibration identifiers.