Shumei KQ-200VDV Desktop Dual-Frequency Digital Ultrasonic Cleaner
| Brand | Shumei |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | KQ-200VDV |
| Price | Upon Request |
| Dimensions (W×D×H) | 410 × 260 × 380 mm |
| Inner Tank Dimensions | 300 × 150 × 180 mm |
| Tank Capacity | 8 L |
| Ultrasonic Frequencies | 45 kHz & 80 kHz |
| Frequency Switching Interval | 1–999 s |
| Total Ultrasonic Power | 200 W |
| Power Adjustment Range | 40–100 % |
| Heating Power | 400 W |
| Temperature Control Range | 10–80 °C |
| Timer Range | 1–480 min |
| Cumulative Operating Time Display | up to 999,999 h |
| Water Level Detection Range | 1–140 mm |
| Tank Material | Stainless Steel (SUS304) |
| Basket Material | Polypropylene |
Overview
The Shumei KQ-200VDV is a desktop dual-frequency digital ultrasonic cleaner engineered for precision cleaning, degassing, and sample preparation in regulated laboratory environments. Unlike conventional single-frequency ultrasonic systems, the KQ-200VDV employs synchronized 45 kHz and 80 kHz transducer excitation—enabling simultaneous generation of distinct acoustic pressure fields within the same cleaning bath. This dual-frequency architecture leverages the complementary physical effects of low-frequency cavitation (enhanced mechanical scrubbing for particulate and adhesive contaminants) and high-frequency cavitation (finer bubble collapse dynamics suited for sub-micron residues and delicate substrates). The result is improved cleaning uniformity across complex geometries, reduced shadowing effects, and elimination of persistent cleaning “dead zones” commonly observed in monofrequency systems. Designed for reproducible operation under GLP and ISO/IEC 17025-aligned workflows, the unit integrates real-time digital monitoring of critical process parameters—including actual liquid level, bath temperature, applied power, and elapsed ultrasonic exposure time—to support audit-ready documentation.
Key Features
- Dual-frequency digital control with programmable switching intervals (1–999 s) between 45 kHz and 80 kHz modes
- 200 W total ultrasonic output, continuously adjustable from 40% to 100% in 1% increments
- Integrated 400 W heating system with ±1 °C temperature stability over 10–80 °C range
- Stainless steel (SUS304) tank and enclosure; corrosion-resistant polypropylene mesh basket included
- Microcontroller-based interface with 7-segment LED display showing real-time values for frequency, power, time, temperature, and liquid level
- Comprehensive safety protection: over-temperature cutoff, low-level fluid detection, over-current/over-voltage shutdown, and dry-run prevention
- Acoustic insulation housing with sound-dampening lid reduces operational noise to ≤55 dB(A) at 1 m
- Volatile solvent vapor recovery system minimizes workplace exposure and supports compliance with OSHA PEL and EU Directive 2004/37/EC
- Cumulative operating hour counter (up to 999,999 h) for preventive maintenance scheduling and equipment lifecycle tracking
Sample Compatibility & Compliance
The KQ-200VDV accommodates a wide range of sample types and containers—including glassware (vials, cuvettes, pipette tips), metal components (precision optics mounts, microfluidic chips), ceramic substrates, and polymer-based labware—without risk of surface pitting or etching when operated within recommended parameters. Its dual-frequency capability ensures effective removal of organic films, metallic oxides, solder fluxes, biological residues, and nanoparticle aggregates from both flat and recessed surfaces. The unit complies with IEC 61000-6-3 (EMC emission standards) and IEC 61000-6-2 (immunity), and its electrical design meets UL/CSA 61010-1 requirements for laboratory equipment. While not certified to FDA 21 CFR Part 11 out-of-the-box, the system’s deterministic digital control architecture, non-volatile parameter memory, and timestamped event logging support validation pathways for GMP-regulated applications when integrated into validated SOPs.
Software & Data Management
The KQ-200VDV operates via an embedded microcontroller with firmware supporting full parameter retention across power cycles. All user-defined settings—including frequency selection sequence, dwell times, power levels, temperature setpoints, and timer durations—are stored in EEPROM with write-protection logic. The front-panel interface provides immediate visual feedback for all active and historical states, eliminating reliance on external software. For traceability, the cumulative runtime counter logs total operational hours with millisecond-resolution timestamps, enabling predictive maintenance planning per ISO 13374-1 guidelines. Optional RS-232 or USB-to-serial adapters (sold separately) allow integration with Lab Information Management Systems (LIMS) or custom SCADA platforms for automated data capture, provided third-party drivers are developed per device protocol documentation.
Applications
- Precision cleaning of HPLC/GC autosampler vials, syringe filters, and column frits prior to analytical use
- Removal of photoresist residues and metal contaminants from semiconductor wafers and MEMS devices
- Cell lysis and homogenization in molecular biology workflows (e.g., DNA/RNA extraction, protein isolation)
- Ultrasonic degassing of solvents for chromatography, spectroscopy, and thin-film deposition
- Emulsification and dispersion of nanomaterials (e.g., graphene oxide, quantum dots) in aqueous or organic media
- Preparation of calibration standards requiring particle-free solvent matrices
- Decontamination of reusable surgical instruments and dental tools in research-grade biosafety labs
FAQ
Does the KQ-200VDV support remote control or PC connectivity?
The unit features local digital control only; optional RS-232 or USB serial interfaces can be added for external command input and status reporting.
What is the maximum allowable solution volume for optimal cavitation performance?
For consistent energy distribution, fill the tank to between 60 mm and 140 mm depth—corresponding to approximately 4–8 L depending on basket loading.
Can the dual-frequency mode operate simultaneously, or does it alternate?
Frequencies alternate automatically per user-defined dwell time; true simultaneous dual-frequency excitation is not supported due to transducer coupling constraints.
Is the stainless steel tank passivated or electropolished for high-purity applications?
The SUS304 tank undergoes standard industrial passivation per ASTM A967 but does not include electropolishing; users requiring ultra-low metal leaching should validate with ICP-MS testing.
How often does the unit require calibration verification?
No routine calibration is required for frequency or power output; however, annual verification of temperature sensor accuracy (±1 °C) and timer fidelity (±0.1%) is recommended per ISO/IEC 17025 Clause 6.5.
