Hanuo HN-3AL Adjustable-Power Ultrasonic Cleaner

Overview

The Hanuo HN-3AL Adjustable-Power Ultrasonic Cleaner is a compact, benchtop ultrasonic cleaning system engineered for precision degreasing, particle removal, and surface decontamination in regulated laboratory, clinical, and light industrial environments. It operates on the principle of high-frequency acoustic cavitation—generating controlled micro-bubbles in aqueous or mild solvent-based cleaning solutions at a stable 40 kHz frequency. These transient cavitation events produce localized shockwaves and micro-jets that effectively dislodge sub-micron contaminants from complex geometries without mechanical abrasion. Designed for reproducible cleaning cycles under GLP-aligned protocols, the HN-3AL supports consistent validation of cleaning efficacy across routine QC, dental instrument reprocessing, electronics manufacturing, and research sample preparation.

Key Features

• Digitally adjustable ultrasonic power output (40–100% of 120 W nominal), enabling optimization for delicate substrates (e.g., optical lenses, microfluidic chips) or robust particulate removal (e.g., metal shavings, solder flux residues)
• Independent temperature control (20–80 °C) via integrated heating element (100 W), facilitating thermally enhanced cleaning kinetics while maintaining solution stability
• Precision digital timer (0–30 minutes) with auto-shutoff, supporting repeatable cycle definition for SOP-driven operations
• Sound-dampening hinged lid compliant with ISO 15710 noise-reduction guidelines for shared laboratory spaces
• Stainless steel 304 ultrasonic tank (240 × 135 × 100 mm internal dimensions) with corrosion-resistant finish and uniform transducer distribution for consistent energy field homogeneity
• Manual drain valve positioned at tank base for safe, residue-free solution exchange—designed to minimize operator exposure during maintenance

Sample Compatibility & Compliance

The HN-3AL accommodates a broad range of sample types including stainless steel surgical instruments, titanium dental tools, PCB assemblies, precision watch components, jewelry alloys (gold, silver, platinum), and polymer-based microdevices. Its 3 L capacity and 40 kHz operating frequency provide optimal balance between penetration depth and surface resolution for parts up to 200 mm in length. The unit conforms to fundamental electrical safety requirements per IEC 61010-1 and incorporates thermal cut-off protection to prevent dry-run damage. While not certified as a medical device under FDA 21 CFR Part 820, its operational parameters align with AAMI ST79 Annex D recommendations for non-critical item cleaning and support documentation for internal audit trails required under ISO/IEC 17025-accredited laboratories.

Software & Data Management

The HN-3AL operates via an intuitive front-panel interface with LED display—no external software or driver installation required. All user-defined parameters (power %, temperature setpoint, duration) are retained in non-volatile memory across power cycles. Though standalone, the device’s deterministic behavior enables full integration into electronic lab notebook (ELN) systems via manual entry of cleaning logs. For facilities requiring traceability, timestamped parameter records can be linked to batch IDs or instrument calibration certificates. The absence of network connectivity ensures compliance with air-gapped security policies common in pharmaceutical QC labs.

Applications

• Pre-analytical sample preparation: removal of organic residues from glassware, pipette tips, and filtration membranes prior to HPLC or mass spectrometry analysis
• Dental clinic reprocessing: cleaning of orthodontic brackets, impression trays, and handpiece components in accordance with ADA guidelines
• Electronics manufacturing: post-soldering flux removal from SMT boards and MEMS sensor housings
• Materials science labs: debubbling of sol-gel precursors and dispersion of nanomaterials in suspension
• Jewelry restoration: non-abrasive cleaning of engraved surfaces, porous stones, and antique filigree without structural compromise

FAQ

Is the HN-3AL suitable for cleaning ultrasonic transducers themselves?
No—this unit is not designed for cleaning other ultrasonic equipment. Its tank geometry and power profile are optimized for immersed samples, not transducer maintenance.
Can I use flammable solvents in this cleaner?
No. Only water-based detergents, isopropyl alcohol (≤70% v/v), or ethanol/water mixtures below flash point thresholds are permitted. Flammable solvents pose fire hazard and may damage seals.
Does the unit include a degassing function?
Yes—the default startup sequence includes a 3-minute degas mode to evacuate dissolved air from the cleaning solution, ensuring maximal cavitation efficiency before timed operation begins.
What is the recommended maintenance interval for the transducer assembly?
Visual inspection every 6 months; ultrasonic output verification using calibrated aluminum foil test (per ASTM E1597) annually or after 500 operational hours.
Is the stainless steel tank passivated?
Yes—tank surfaces undergo electropolishing and nitric acid passivation per ASTM A967 to enhance corrosion resistance and minimize metallic ion leaching into sensitive cleaning solutions.