Supmile KQ-250E Benchtop Ultrasonic Cleaner
| Brand | Supmile |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | KQ-250E |
| Instrument Type | General-Purpose |
| Tank Capacity | 10 L |
| Ultrasonic Frequency | 40 kHz |
| Ultrasonic Power Output | 250 W |
| Temperature Control Range | Ambient to 80 °C |
| Timer Setting | 1–60 min or Continuous Operation |
| Sound-Dampening Lid | Yes |
| Manual Fill & Drain | Yes |
Overview
The Supmile KQ-250E is a benchtop ultrasonic cleaner engineered for routine laboratory cleaning, degreasing, and particle removal from precision components, glassware, surgical instruments, and analytical sample preparation tools. It operates on the principle of ultrasonic cavitation—where high-frequency sound waves (40 kHz) generate microscopic vacuum bubbles in the cleaning solution; their rapid collapse produces localized shockwaves and microstreaming that dislodge contaminants from surfaces without mechanical abrasion. Designed for reliability in QC labs, research facilities, and maintenance workshops, the KQ-250E delivers consistent energy distribution across its 10 L stainless-steel tank (300 × 240 × 150 mm internal dimensions), with integrated heating (up to 80 °C) and precise timing control to optimize cleaning efficacy for diverse substrate materials and soil types.
Key Features
- Robust 304 stainless-steel construction for corrosion resistance and long-term structural integrity in aqueous and mild solvent environments.
- Dedicated 250 W ultrasonic transducer system operating at 40 kHz—optimized for broad-spectrum contaminant removal while minimizing component fatigue on delicate parts.
- Adjustable heating module (400 W) enabling temperature-controlled cleaning between ambient and 80 °C, supporting enhanced solubilization of organic residues and improved detergent performance.
- Mechanical timer with 1–60 minute preset intervals plus continuous operation mode—providing reproducible process cycles aligned with SOPs.
- Integrated sound-dampening lid reduces airborne noise to ≤55 dB(A) during operation, improving ergonomic conditions in shared lab spaces.
- Manual fill-and-drain ports located at tank base facilitate controlled solution exchange without tipping or external siphoning—critical for handling hazardous or regulated cleaning agents.
- Standard accessories include a stainless-steel mesh basket and support rack, ensuring uniform part suspension and optimal acoustic coupling.
Sample Compatibility & Compliance
The KQ-250E accommodates a wide range of sample geometries—including pipette tips, crucibles, filtration membranes, optical lenses, PCBs, and dental instruments—within its 300 × 240 × 150 mm tank volume. Its non-aggressive cleaning mechanism preserves surface finish and dimensional accuracy of calibration standards and metrology-grade components. While not certified for sterile processing per ISO 17664 or EN 285, the unit supports GLP-compliant workflows when used with validated cleaning protocols and documented parameters (time, temperature, solution composition). Its electrical design conforms to IEC 61010-1 safety standards for laboratory equipment, and the AC220V/50Hz power input meets regional regulatory requirements for Class I protected appliances.
Software & Data Management
As a mechanically controlled instrument, the KQ-250E does not incorporate digital firmware, network connectivity, or data logging capabilities. All operational parameters—timer setting, heater activation, and power engagement—are managed via tactile rotary dials and toggle switches. This architecture eliminates software validation overhead, making it suitable for environments where FDA 21 CFR Part 11 compliance is not required but traceability of manual settings remains essential. Users are advised to record operational parameters in lab notebooks or electronic batch records alongside cleaning validation documentation.
Applications
- Routine decontamination of volumetric glassware prior to titration or spectroscopic analysis.
- Removal of polishing compounds and metal particulates from precision machined parts in metrology labs.
- Pre-cleaning of HPLC vial inserts, autosampler needles, and column frits to prevent system contamination.
- Supporting ASTM D2240 (Shore A hardness testing) sample preparation by eliminating mold-release residue from elastomer test specimens.
- Processing of histology slides and microscope coverslips in pathology laboratories where residual oils impair staining fidelity.
- De-greasing of small-scale mechanical assemblies in R&D prototyping environments prior to coating or adhesion testing.
FAQ
Is the KQ-250E suitable for cleaning delicate optical components such as lenses or prisms?
Yes—when operated with low-surface-tension, non-ionic aqueous solutions and at reduced time/temperature settings (e.g., 25 °C, 5–10 min), the 40 kHz frequency provides effective particle removal without risk of pitting or coating damage.
Can this unit be used with flammable solvents?
No—the KQ-250E lacks explosion-proof certification and should only be operated with water-based or aqueous-compatible detergents. Flammable solvent use violates IEC 61010-1 safety provisions.
Does the unit include automatic solution level detection or overheat protection?
It features thermal cut-off protection for the heating element but does not monitor liquid level; users must ensure minimum fill height (≥50 mm) before initiating ultrasonic or heating functions.
What is the expected service life of the transducers under normal usage?
With proper maintenance—including regular descaling and avoidance of dry operation—the piezoelectric transducers maintain ≥90% nominal output efficiency for 5,000+ operational hours.
Is the stainless-steel tank passivated per ASTM A967?
The 304 SS tank undergoes standard electropolishing and acid pickling per manufacturer specifications, though formal passivation certification is available upon request for GMP-aligned installations.
