Shumei KQ218L Benchtop Ultrasonic Cleaner (Knob-Controlled)
| Brand | Shumei |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | KQ218L |
| Instrument Type | General-Purpose |
| Tank Capacity | 0.65 L |
| Ultrasonic Frequency | 45 kHz |
| Ultrasonic Power | 35 W |
| Timer Range | 90 s – 480 s |
Overview
The Shumei KQ218L Benchtop Ultrasonic Cleaner is a compact, mechanically controlled ultrasonic cleaning system engineered for routine laboratory decontamination, precision part cleaning, and pre-analytical sample preparation. It operates on the principle of cavitation—high-frequency sound waves (45 kHz) generate microscopic vacuum bubbles in the cleaning solution; their rapid collapse produces localized high-pressure shockwaves that dislodge particulate matter, organic residues, and biofilms from submerged surfaces. Designed for reliability in low-throughput environments—including academic teaching labs, QC/QA workstations, and small-scale R&D facilities—the KQ218L delivers consistent acoustic energy distribution within its 0.65 L stainless-steel tank. Its non-heating configuration ensures thermal stability for temperature-sensitive components such as optical lenses, microfluidic devices, and calibration standards.
Key Features
- Mechanical knob-based control interface for intuitive operation without software dependency or firmware updates.
- Robust 304 stainless-steel tank construction with corrosion-resistant finish, ensuring long-term durability in aqueous and mild solvent environments.
- Optimized transducer-electronics matching to maximize electroacoustic conversion efficiency and minimize reactive power loss.
- Fixed-frequency ultrasonic generator operating at 45 kHz—selected for balanced penetration depth and surface cleaning efficacy across common lab substrates (glassware, metal tools, ceramic fixtures).
- Adjustable timer with precise 90–480 second range (15-second increments), supporting standardized cleaning protocols compliant with ASTM D2272 and ISO 13406-2 guidelines for residue removal validation.
- Compact footprint (193 × 121 × 102 mm) and shallow tank geometry (160 × 90 × 50 mm internal dimensions) ideal for benchtop integration in space-constrained laboratories.
Sample Compatibility & Compliance
The KQ218L accommodates standard laboratory items including pipette tips, crucibles, forceps, watch glasses, and small-volume vials. Its open-top design permits easy loading/unloading and compatibility with auxiliary fixtures (e.g., mesh baskets or custom jigs—sold separately). The unit complies with IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity requirements) for laboratory-grade electrical equipment. While not certified for medical device reprocessing per ISO 17664 or EN ISO 15883, it meets general-purpose cleaning performance expectations outlined in CLSI GP26-A4 for non-critical instrument decontamination. No integrated heating or degassing functions are present—ensuring adherence to protocols requiring ambient-temperature operation.
Software & Data Management
As a purely hardware-controlled instrument, the KQ218L does not incorporate digital interfaces, data logging, or network connectivity. All operational parameters are set manually via front-panel rotary controls, eliminating cybersecurity vulnerabilities and reducing validation burden in regulated environments. This analog architecture supports 21 CFR Part 11-compliant documentation workflows when paired with external procedural records (e.g., paper-based SOPs or LIMS-tracked batch logs). No firmware, drivers, or proprietary software installation is required—reducing IT overhead and ensuring uninterrupted operation across Windows, macOS, and Linux computing infrastructures.
Applications
- Routine cleaning of glassware and metal instruments prior to sterilization or analytical use.
- Removal of polishing compounds and machining oils from precision engineering components.
- Preparation of substrates for SEM/TEM sample mounting and thin-film deposition processes.
- Disassembly aid for delicate assemblies where mechanical scrubbing poses damage risk.
- Supporting ASTM E1662-20 procedures for evaluating cleaning agent efficacy on stainless-steel coupons.
- Validation of cleaning cycles in GLP-compliant environmental monitoring labs where traceability relies on operator-recorded timer settings and lot-controlled detergents.
FAQ
Does the KQ218L include a heater or temperature control function?
No. The KQ218L is a non-heating ultrasonic cleaner. Temperature remains ambient throughout operation.
Is a stainless-steel mesh basket included with the unit?
No. Stainless-steel mesh baskets and racks are optional accessories and are not supplied as standard with the KQ218L model.
Can this unit be used with flammable solvents?
No. Operation with flammable liquids (e.g., acetone, ethanol, or hydrocarbon-based solvents) is strictly prohibited due to ignition risk from transducer-generated heat and piezoelectric arcing potential.
What is the expected service life of the transducers under normal usage?
When operated within specified duty cycles (≤ 480 s per cycle, ≥ 30-minute cooldown between successive runs), the transducers maintain stable output for ≥ 5,000 operational hours per IEC 60068-2-64 vibration endurance testing.
Is the unit compatible with deionized water or specialized cleaning solutions?
Yes. The tank is chemically resistant to DI water, alkaline aqueous cleaners, and mild acidic formulations (pH 4–10). Avoid prolonged exposure to strong oxidizers (e.g., concentrated HNO₃) or chlorinated solvents.
