Shumei KQ3200DB Benchtop Digital Ultrasonic Cleaner

Overview

The Shumei KQ3200DB is a benchtop digital ultrasonic cleaner engineered for precision cleaning, degassing, and sample preparation in laboratory, academic, and industrial quality control environments. It operates on the principle of high-frequency cavitation—generated by piezoelectric transducers bonded to the stainless steel tank bottom—at a stable frequency of 40 kHz. This frequency delivers optimal balance between cleaning efficacy and sample integrity, making it suitable for delicate components such as optical lenses, microfluidic devices, semiconductor wafers, and biological specimens. Unlike modular systems, the KQ3200DB integrates the ultrasonic generator and cleaning tank into a single robust unit, minimizing signal loss and ensuring consistent energy transfer. Its sealed stainless steel construction (AISI 304-grade tank and housing) provides corrosion resistance, thermal stability, and long-term reliability under repeated exposure to aqueous and mild solvent-based cleaning solutions.

Key Features

• Digital microprocessor control with real-time display of operating parameters: elapsed time, set/actual temperature, ultrasonic power level, and cumulative operational hours (up to 999,999 h)
• Three independent 50 W ultrasonic transducers (total 150 W), evenly distributed across the tank base for uniform cavitation field distribution
• Precise temperature regulation via PID-controlled heating element (600 W), adjustable from 20 °C to 80 °C in 1 °C increments
• Adjustable ultrasonic power output (40–100% in 10% steps), enabling optimization for sensitive or heavily soiled samples
• Comprehensive safety system including low-water-level detection, over-temperature, over-voltage, and over-current protection with visual alarm indicators
• Stainless steel mesh basket (argon-welded construction) for secure sample placement and enhanced acoustic coupling
• Integrated drain valve for rapid, spill-free solution exchange—critical for multi-step cleaning protocols or solvent recovery workflows
• Non-removable but acoustically optimized tank geometry (300 × 150 × 150 mm internal volume; 6 L capacity) designed to minimize standing wave interference and hot-spot formation

Sample Compatibility & Compliance

The KQ3200DB supports a broad range of sample types—including glassware, metal parts, ceramic substrates, printed circuit boards, filtration membranes, and biological tissue samples—without compromising structural or functional integrity. Its 40 kHz frequency avoids excessive erosion of soft materials while maintaining sufficient energy for particle detachment from complex geometries. The unit complies with general electrical safety requirements per IEC 61010-1 for laboratory equipment. While not certified for ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, its digital logging capabilities (time-stamped operation records, parameter history, and cumulative runtime) support GLP/GMP-aligned documentation practices when integrated into validated lab workflows. All wetted surfaces are constructed from passivated AISI 304 stainless steel, meeting ASTM A240 standards for corrosion resistance in neutral and mildly alkaline aqueous environments.

Software & Data Management

The KQ3200DB employs embedded single-chip microcontroller firmware—not external PC software—to manage all operational logic. This architecture ensures deterministic response times, immunity to OS-level interruptions, and uninterrupted functionality during power fluctuations. All user-defined settings—including timer duration, target temperature, and power level—are retained in non-volatile memory after shutdown. The device logs cumulative operational hours with second-level resolution, supporting preventive maintenance scheduling and regulatory traceability. Although no USB or Ethernet interface is provided, the digital display provides immediate access to critical audit trail elements: manufacturing date (used for warranty tracking), total runtime, and last-set parameters. For laboratories requiring electronic record archiving, manual timestamped entries can be cross-referenced with lab notebooks or LIMS entries using the displayed values.

Applications

• Routine cleaning of volumetric flasks, pipette tips, crucibles, and HPLC sample vials prior to analytical use
• Removal of polishing compounds and organic residues from optical components and metrology fixtures
• Pre-analytical sample preparation: cell lysis (e.g., bacterial or yeast disruption), nanoparticle dispersion, and DNA/RNA extraction support
• Degassing of solvents and resins prior to chromatography, casting, or coating processes
• Debonding of solder flux residues from PCB assemblies in electronics R&D labs
• Supporting ASTM D2624, ISO 11742, and USP <788> particulate matter testing through controlled, reproducible cleaning of test apparatus

FAQ

Is the KQ3200DB suitable for use with flammable solvents?
No. The unit is designed exclusively for aqueous and water-miscible solutions. It lacks explosion-proof certification and should never be operated with acetone, ethanol, or other volatile organic solvents.
Does the unit include a lid for noise reduction?
No. The KQ3200DB does not ship with a sound-dampening lid. Users requiring reduced ambient noise should consider third-party acrylic enclosures rated for ultrasonic compatibility.
Can the stainless steel mesh basket be replaced or customized?
Yes. The standard basket is removable and replaceable; custom-sized baskets compatible with the 300 × 150 mm footprint can be fabricated from 304 stainless steel wire mesh (0.5–1.0 mm aperture) upon request.
What is the expected service life of the ultrasonic transducers?
Under normal operating conditions (≤8 h/day, proper solution maintenance, and avoidance of dry operation), transducers typically maintain ≥90% nominal output for 5,000+ hours. Regular inspection for delamination or discoloration is recommended.
How is calibration performed for temperature and timer functions?
Temperature calibration requires a NIST-traceable RTD probe placed at the tank center; deviation >±1.5 °C warrants factory recalibration. Timer accuracy is factory-verified to ±0.1% and does not require user adjustment.