Hanuo HN22-500 Advanced Heating Ultrasonic Cleaner

Overview

The Hanuo HN22-500 Advanced Heating Ultrasonic Cleaner is a benchtop laboratory-grade ultrasonic cleaning system engineered for precision, reproducibility, and operational stability in demanding analytical and preparatory workflows. It operates on the principle of high-frequency cavitation—generating controlled microbubbles in liquid media via 40 kHz transducers bonded to the stainless steel tank base. When these bubbles collapse under acoustic pressure, they release localized energy sufficient to dislodge particulate contaminants, organic residues, biofilms, and adsorbed layers from complex surface geometries—including narrow lumens, porous matrices, and microstructured components. The integrated heating function (adjustable up to 80 °C) enhances solvent activity, reduces surface tension, and accelerates dissolution kinetics—particularly critical when cleaning viscous residues, waxy deposits, or temperature-sensitive biological samples. Unlike non-heated units, this model enables thermally assisted cleaning protocols aligned with ASTM D4163, ISO 13485 cleaning validation requirements, and USP recommendations for medical device reprocessing.

Key Features

• 22-liter stainless steel tank (500 × 300 × 150 mm internal dimensions) constructed from 304-grade electropolished stainless steel for corrosion resistance and ease of decontamination
• Fixed-frequency 40 kHz ultrasonic generation with 500 W total transducer power output, delivering uniform energy distribution across the entire bath volume
• Digital microprocessor-based control panel with dual-display interface: one for real-time temperature readout (±1 °C accuracy), another for programmable cleaning duration (1–99 minutes)
• Programmable heating system with adjustable setpoint range from ambient to 80 °C; thermal cutoff protection prevents dry-run damage and overheating
• Integrated sound-dampening lid with ergonomic handle and safety interlock—reduces airborne noise to ≤55 dB(A) at 1 m distance per IEC 61000-3-2
• Cumulative runtime counter (0–99,999 hours) supports preventive maintenance scheduling and audit-ready usage logging
• Manual fill-and-drain configuration with brass drain valve—compatible with deionized water, aqueous detergents, and low-volatility solvents per OSHA and CLP guidelines

Sample Compatibility & Compliance

The HN22-500 accommodates a broad spectrum of sample types without risk of mechanical abrasion or thermal degradation: glassware (volumetric flasks, cuvettes, chromatography vials), metal components (surgical instruments, calibration standards), polymer substrates (microfluidic chips, pipette tips), and delicate optics (lens assemblies, spectrometer mirrors). Its design conforms to essential safety and performance benchmarks including IEC 61010-1 (electrical safety), IEC 60529 (IP20 ingress protection), and EN 61326-1 (EMC compliance for laboratory equipment). For regulated environments, the unit supports documented cleaning validation through traceable time/temperature logs and facilitates integration into GMP/GLP workflows where equipment qualification (IQ/OQ) is required.

Software & Data Management

While the HN22-500 operates as a standalone instrument with no external software dependency, its digital controller maintains non-volatile memory for last-used parameters—including timer setting and temperature setpoint—ensuring protocol consistency across operators and shifts. All operational data (cumulative runtime, power-on cycles, and user-adjusted settings) are retained during power interruption. Though not equipped with USB or Ethernet connectivity, the unit’s deterministic behavior and calibrated thermal response enable seamless incorporation into laboratory information management systems (LIMS) via manual log entry or barcode-scanned batch records.

Applications

• Pre-analytical sample preparation: cleaning HPLC autosampler vials, GC inlet liners, and ICP-MS nebulizers to eliminate memory effects
• Medical device reprocessing: removal of blood residue, tissue fragments, and lubricants from endoscopes, biopsy forceps, and orthopedic implants prior to sterilization
• Materials science: degassing of resin mixtures before casting, dispersing nanomaterials in suspension, and surface activation of electrodes for electrochemical testing
• Quality control labs: routine cleaning of reference standards, calibration weights, and optical components to maintain metrological integrity
• Pharmaceutical R&D: extraction of active compounds from botanical matrices, cell lysis for protein isolation, and dissolution enhancement of poorly soluble APIs

FAQ

Does the HN22-500 support variable frequency operation?
No. It operates exclusively at 40 kHz—a frequency optimized for general-purpose cleaning efficiency and cavitation density in aqueous and mild solvent systems.
Is the heating function digitally regulated with feedback control?
Yes. A PT100 sensor provides closed-loop temperature monitoring, and the controller adjusts heater duty cycle to maintain setpoint within ±1 °C tolerance.
Can this unit be used with flammable solvents?
Not recommended. The HN22-500 lacks explosion-proof certification and is designed for aqueous or high-flashpoint (>60 °C) cleaning solutions only.
What is the expected service life of the ultrasonic transducers?
Under normal operating conditions and proper maintenance (e.g., avoiding dry operation and using appropriate cleaning solutions), transducer lifespan exceeds 10,000 hours.
Is third-party calibration documentation available?
Calibration certificates for temperature and timer functions can be issued upon request, traceable to NIST-certified references, supporting ISO/IEC 17025-compliant laboratories.