Hanuo HN3-120 Basic Ultrasonic Cleaner
| Brand | Hanuo |
|---|---|
| Origin | Shanghai, China |
| Model | HN3-120 |
| Capacity | 3 L |
| Ultrasonic Frequency | 40 kHz |
| Ultrasonic Power | 120 W |
| Adjustable Power | No |
| Adjustable Temperature | No |
| Adjustable Timer | Yes (1–99 min) |
| Sound-Dampening Lid | Included |
| Drainage | Manual valve |
| Construction | Stainless steel tank and housing |
| Timer Display | Digital, with cumulative operating time up to 99,999 hours |
Overview
The Hanuo HN3-120 Basic Ultrasonic Cleaner is an entry-level, benchtop ultrasonic cleaning system engineered for routine laboratory decontamination and precision part cleaning. It operates on the principle of cavitation—high-frequency sound waves (40 kHz) generate microscopic vacuum bubbles in a liquid medium (typically water or aqueous detergent solutions), which collapse violently upon contact with surfaces, dislodging particulate contaminants, organic residues, and loosely adhered biofilms. This physical cleaning mechanism avoids mechanical abrasion and chemical aggression, making it ideal for delicate components such as glassware, pipette tips, surgical instruments, optical lenses, and semiconductor wafers. Designed for reliability and ease of use in QC labs, academic teaching facilities, and R&D environments, the HN3-120 delivers consistent cleaning performance without integrated heating or power modulation—prioritizing operational simplicity and cost-effective maintenance.
Key Features
- Digital timer with programmable cleaning duration from 1 to 99 minutes, enabling reproducible cycle execution across users and shifts.
- Cumulative operating hour counter (up to 99,999 hours), supporting preventive maintenance scheduling and equipment lifecycle tracking in GLP-compliant settings.
- Single-chip microcontroller-based control system ensures stable waveform generation and minimal timing drift over extended service life.
- 3-liter stainless steel tank (230 × 140 × 100 mm internal dimensions) constructed from corrosion-resistant AISI 304 grade stainless steel—resistant to common cleaning agents and compatible with mild alkaline or neutral detergents.
- Integrated sound-dampening lid reduces ambient noise to ≤55 dB(A) at 1 m distance, improving ergonomics in shared lab spaces and meeting ISO 14040-referenced acoustic safety expectations for continuous operation.
- Manual drain valve facilitates rapid solution exchange; no automated fill/drain plumbing required—minimizing installation complexity and infrastructure dependency.
Sample Compatibility & Compliance
The HN3-120 accommodates standard laboratory vessels including beakers (up to 500 mL), volumetric flasks, crucibles, and small instrument sets placed on the included stainless steel mesh basket. It is not rated for sterilization (i.e., does not achieve SAL ≤10⁻⁶ per ISO 11137) nor validated for endotoxin removal per USP . However, when used with validated cleaning protocols—including pre-rinse, ultrasonic immersion (with appropriate detergent), post-rinse, and drying—it supports adherence to ISO 15883-1 (washer-disinfectors) and ASTM D4296 (standard practice for ultrasonic cleaning of metal parts). The unit complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets CE marking requirements for EMC (EN 61326-1) and low-voltage directive (2014/35/EU).
Software & Data Management
This is a standalone hardware device with no embedded software architecture, network interface, or data export capability. All operational parameters are set via front-panel push-button controls and displayed on a 4-digit LED screen. The cumulative hour meter provides non-volatile storage of total runtime—accessible for audit purposes without external logging tools. While the HN3-120 does not support FDA 21 CFR Part 11 electronic signatures or audit trails, its deterministic timer logic and mechanical simplicity facilitate straightforward validation documentation (e.g., IQ/OQ protocols) in regulated environments where manual recordkeeping remains acceptable.
Applications
- Routine cleaning of volumetric glassware prior to calibration or analytical use (e.g., titration flasks, burettes).
- Removal of solder flux, grease, and particulates from printed circuit boards (PCBs) and microelectromechanical systems (MEMS) components.
- Preparation of histology slides and microscope coverslips for high-resolution imaging.
- Decontamination of reusable pipette tips, forceps, and dental handpieces in teaching laboratories.
- Supporting ASTM E1667-20 procedures for evaluating cleaning efficacy of medical device reprocessing workflows.
FAQ
Is the HN3-120 suitable for cleaning delicate optics or coated lenses?
Yes—when operated with deionized water or low-surfactant solutions and limited to ≤10-minute cycles, it effectively removes dust and fingerprint residues without surface etching or coating damage.
Does this model include a heater or temperature control?
No—the HN3-120 is a basic configuration without thermal regulation. For temperature-sensitive applications, ambient-temperature cleaning is recommended.
Can the unit be validated for GMP environments?
Yes—its fixed frequency, stable power output, and digital timer allow for documented IQ/OQ qualification; however, full PQ requires integration into site-specific cleaning SOPs and residue testing.
What maintenance is required for long-term reliability?
Routine inspection of the transducer bond integrity, periodic descaling with 5% citric acid solution, and verification of timer accuracy every 6 months.
Is the stainless steel tank passivated per ASTM A967?
The tank material meets AISI 304 specifications; passivation is not factory-applied but can be performed onsite using nitric acid or citric acid methods prior to first use in critical applications.
