Hanuo HN22-600C Dual-Frequency Heated Ultrasonic Cleaner

Overview

The Hanuo HN22-600C Dual-Frequency Heated Ultrasonic Cleaner is an engineered solution for precision cleaning of delicate and complex components in research laboratories, quality control environments, and light industrial maintenance workflows. It operates on the principle of ultrasonic cavitation—generating high-frequency mechanical oscillations in a liquid medium to produce transient microbubbles that collapse with localized energy release, effectively dislodging particulate contaminants, organic residues, and biofilms from surfaces without mechanical abrasion. The dual-frequency capability (40 kHz and 59 kHz) enables selective optimization: lower frequency delivers higher cavitation intensity suitable for robust substrates and heavy soiling, while the higher frequency provides finer, more uniform energy distribution ideal for fragile parts, microfluidic devices, optical components, and porous materials. Integrated heating (adjustable up to 80 °C) enhances solvent activity and accelerates contaminant solubilization, particularly for waxy, oily, or proteinaceous residues.

Key Features

• Dual-frequency operation (40 kHz / 59 kHz) with manual switching to match substrate sensitivity and soil type.
• 600 W ultrasonic power output distributed uniformly across a 500 × 300 × 150 mm stainless steel tank (22 L usable capacity), ensuring consistent energy delivery throughout the cleaning volume.
• Digital microprocessor-based control system with real-time display of elapsed time, set temperature, and cumulative operational hours (up to 99,999 h).
• Precise timer adjustment from 1 to 99 minutes, with automatic shutdown and audible alert upon cycle completion.
• Adjustable heating function (room temperature to 80 °C) with PID-controlled thermal regulation for reproducible thermal profiles.
• Full 304 stainless steel construction—both inner tank and outer housing—for corrosion resistance, cleanability, and compliance with ISO 15190:2020 laboratory equipment material requirements.
• Included sound-dampening lid reduces ambient noise to ≤65 dB(A) at 1 m distance and minimizes solvent evaporation during heated operation.
• Manual inlet and drain fittings facilitate safe, controlled fluid handling; compatible with deionized water, aqueous detergents, and low-volatility solvents.

Sample Compatibility & Compliance

The HN22-600C supports cleaning of glassware (volumetric flasks, pipettes, cuvettes), metal parts (stainless steel fixtures, calibration standards), polymer components (PC, PTFE, polypropylene labware), ceramics, and precision optics. It is routinely deployed in pre-analytical sample preparation—including HPLC vial cleaning, GC autosampler tray decontamination, and ICP-MS component rinsing—where residue-free surfaces are critical. While not certified as a medical device sterilizer, it meets baseline functional requirements for non-critical reprocessing under ISO 17664-1:2017 guidance for cleaning validation. Its design aligns with general Good Laboratory Practice (GLP) expectations for equipment traceability and operational consistency, though formal 21 CFR Part 11 compliance requires external audit documentation and procedural controls.

Software & Data Management

This model features embedded firmware only—no PC connectivity or proprietary software suite. All operational parameters are managed via front-panel membrane keys and a high-contrast LCD. The cumulative hour counter serves as a maintenance log for preventive servicing (e.g., transducer performance verification every 5,000 h). Users are advised to maintain manual records of cleaning cycles, solutions used, and visual inspection outcomes to support internal QA/QC traceability. For regulated environments, integration with lab information management systems (LIMS) may be achieved via external time-stamped logbooks or digital workflow tools.

Applications

• Removal of machining oils, polishing compounds, and flux residues from electronic PCBs and semiconductor packaging substrates.
• Cleaning of reusable surgical instruments, endoscope components, and dental handpieces prior to sterilization (as a Class IIa ancillary process).
• Preparation of chromatography columns, filters, and injection syringes to prevent carryover and baseline drift.
• De-gassing of mobile phases and solvent mixtures before HPLC or UHPLC analysis.
• Extraction support for solid-phase samples (e.g., plant tissue homogenates, soil extracts) using sonication-assisted solvent extraction protocols.
• Routine maintenance of optical lenses, spectrometer mirrors, and metrology standards where particulate adhesion compromises measurement fidelity.

FAQ

Is the HN22-600C suitable for cleaning delicate MEMS devices or microfluidic chips?

Yes—when operated at 59 kHz with low-surface-tension aqueous detergent and controlled temperature (≤45 °C), it delivers gentle yet effective cleaning without damaging microstructures.
Can this unit be used with flammable solvents such as acetone or ethanol?

No—this model lacks explosion-proof certification, intrinsically safe circuitry, or vapor recovery systems. Only aqueous or flashpoint >60 °C solutions are recommended.
Does the unit include a built-in degassing mode?

It does not feature a dedicated degas program, but extended operation at 59 kHz without heating achieves effective dissolved gas removal in most common solvents.
What maintenance is required for long-term reliability?

Monthly inspection of tank integrity, quarterly verification of heater calibration against a reference thermometer, and annual transducer impedance testing using a qualified service technician.
Is the stainless steel mesh basket included with the unit?

Yes—a 304 stainless steel adjustable-height basket is supplied standard with each unit, optimized for even part exposure and minimal shadowing effects.