Shumei KQ-300E Benchtop Ultrasonic Cleaner
| Brand | Shumei |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | General-Purpose Ultrasonic Cleaner |
| Model | KQ-300E |
| Capacity | 10 L |
| Ultrasonic Frequency | 40 kHz |
| Ultrasonic Power Output | 300 W |
| Adjustable Power | No |
| Temperature Range | 0–80 °C |
| Heating Power | 600 W |
| Timer Range | 1–20 min |
| Sound-Dampening Lid | Yes |
| Manual Fill/Drain | Yes |
| Input Voltage | 220 V / 50 Hz |
| Tank Dimensions (L×W×H) | 300 × 240 × 150 mm |
| External Dimensions (L×W×H) | 320 × 264 × 335 mm |
| Tank Material | 304 Stainless Steel |
| Heating Method | PTC Surface-Mount Heater |
| Auto-Frequency Sweeping | Yes |
| Transducer Configuration | Standard 40 kHz transducers, 50 W per unit |
| Accessories | Plastic mesh basket, stainless steel sound-dampening lid |
Overview
The Shumei KQ-300E 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 cavitation—high-frequency acoustic energy (40 kHz) transmitted through a liquid medium induces rapid formation and collapse of microscopic vapor bubbles, generating localized high-pressure shockwaves that dislodge contaminants from surfaces without mechanical abrasion. Designed for reproducible, non-destructive cleaning in QC labs, research facilities, and medical device reprocessing environments, the KQ-300E features a robust 304 stainless steel tank, integrated PTC surface-mount heating, and a mechanically controlled interface optimized for reliability under continuous operation.
Key Features
- 10-liter working capacity with precise internal dimensions (300 × 240 × 150 mm) accommodating standard labware including beakers, flasks, pipette tips, and small instrument sets.
- Fixed-frequency 40 kHz ultrasonic generation using industrial-grade piezoelectric transducers (50 W per unit), delivering uniform energy distribution across the tank bottom.
- PTC (Positive Temperature Coefficient) heating system with 600 W output enables stable temperature control between 0 °C and 80 °C—critical for optimizing cleaning efficacy of organic residues and biofilms.
- Integrated auto-frequency sweeping circuitry minimizes standing wave formation and ensures consistent cavitation intensity over time, improving cleaning uniformity and reducing hot-spot degradation of sensitive substrates.
- Mechanical timer with 1–20 minute adjustable range provides deterministic process repeatability—essential for SOP-driven workflows compliant with ISO 13485 or GLP documentation requirements.
- Stainless steel sound-dampening lid reduces ambient noise to ≤55 dB(A) during operation and prevents solvent evaporation, enhancing operator safety and thermal stability.
- Manual fill-and-drain valve system allows controlled fluid handling without external plumbing; compatible with deionized water, aqueous detergents, and low-volatility solvents (e.g., isopropanol, ethanol).
Sample Compatibility & Compliance
The KQ-300E supports cleaning of diverse sample types including borosilicate glass, stainless steel, titanium alloys, ceramic substrates, and polymer-based consumables (e.g., polypropylene centrifuge tubes). Its 304 stainless steel tank resists corrosion from common alkaline and neutral pH cleaning solutions. While not certified for sterile processing per ISO 17664 or AAMI ST79, the unit meets general electrical safety standards IEC 61010-1 (Laboratory Equipment) and EMC directive 2014/30/EU. For regulated environments, users may validate cleaning cycles per ASTM D4163 (ultrasonic cleaning performance) or USP (cleaning validation guidance).
Software & Data Management
The KQ-300E employs a fully hardware-based control architecture with no embedded firmware or digital display—ensuring long-term operational stability and immunity to software obsolescence. All parameters (time, temperature, and power activation) are set via calibrated mechanical dials and switches, supporting audit-ready manual log entries. Though it lacks USB or Ethernet connectivity, its deterministic operation aligns with paper-based or LIMS-integrated recordkeeping systems used in GMP-compliant laboratories where electronic records must comply with FDA 21 CFR Part 11—eliminating validation overhead associated with programmable controllers.
Applications
- Routine cleaning of HPLC vials, GC autosampler trays, and electrophoresis combs prior to analytical use.
- Removal of polishing compounds and metal fines from machined parts in metrology labs.
- Pre-sterilization cleaning of reusable surgical instruments in hospital central supply departments.
- Extraction support for environmental samples (e.g., filter membranes, sediment cores) prior to ICP-MS or AAS analysis.
- Surface preparation of SEM/TEM specimens to minimize particulate interference during imaging.
- Decontamination of reusable pipette tips and microcentrifuge tubes in molecular biology workflows.
FAQ
Is the ultrasonic frequency adjustable on the KQ-300E?
No—the unit operates exclusively at 40 kHz, which is optimized for broad-spectrum contaminant removal in aqueous media.
Can the KQ-300E be used with flammable solvents?
It is not designed for volatile organic solvents such as acetone or hexane due to lack of explosion-proof certification and open-tank configuration.
Does the unit include a filtration or recirculation system?
No—fluid management is manual; users must drain and refill the tank between cycles.
What is the expected service life of the transducers?
Under normal usage (≤4 hours/day, proper degassing, and regular descaling), the PZT transducers typically maintain ≥90% nominal output for 5+ years.
Is the stainless steel tank passivated per ASTM A967?
The 304 SS tank undergoes standard mill-passivation; additional electropolishing or nitric acid passivation can be performed by end users per application requirements.
