Shumei KQ-250DV Desktop Digital Ultrasonic Cleaner

Overview

The Shumei KQ-250DV Desktop Digital Ultrasonic Cleaner is an integrated benchtop system engineered for precision cleaning, degassing, emulsification, cell disruption, and solvent extraction in regulated laboratory environments. It operates on the principle of high-frequency acoustic cavitation—where ultrasonic energy at 40 kHz generates controlled microbubble implosion within the cleaning medium, delivering mechanical shear forces that remove particulate, organic, and biofilm contaminants from delicate substrates without abrasion or thermal degradation. Designed for reproducibility and operational traceability, the unit integrates a sealed stainless steel 304 tank (300 × 240 × 180 mm, 13 L capacity), microprocessor-driven digital interface, and closed-loop safety monitoring. Its compact footprint (410 × 350 × 380 mm) enables deployment in QC labs, R&D facilities, academic teaching laboratories, and GMP-compliant cleanrooms where space efficiency and process consistency are critical.

Key Features

• Full digital microcontroller architecture with simultaneous real-time display of ultrasonic power (%), bath temperature (°C), water level (mm), elapsed time (min), and cumulative operating hours (up to 999,999 h)
• Adjustable ultrasonic output (40–100% of 250 W nominal power) and independent heating control (10–80 °C, 400 W) enable method optimization across diverse sample matrices
• Integrated safety interlocks: over-temperature, over-voltage, over-current, low-water, and dry-run protection with visual alarm indicators
• Electrically actuated fill and drain valves support automated liquid handling protocols and reduce operator exposure to solvents
• Vapor recovery system minimizes volatile organic compound (VOC) emissions during heated operation—supporting OSHA and EPA compliance in enclosed lab spaces
• Sound-dampening stainless steel lid reduces ambient noise to ≤55 dB(A) at 1 m distance, meeting ISO 15714 acoustic emission guidelines for laboratory equipment
• Stainless steel 304 construction (inner tank and outer housing) ensures corrosion resistance against aqueous, alkaline, and mild organic solutions

Sample Compatibility & Compliance

The KQ-250DV accommodates a broad range of laboratory consumables and instrumentation components—including glassware (vials, cuvettes, pipette tips), metal parts (surgical tools, calibration standards), ceramic substrates, and polymer-based microfluidic devices. Its non-contact cleaning mechanism preserves dimensional integrity and surface finish of precision optics and MEMS components. The unit conforms to IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity requirements). While not certified to UL/CSA standards out-of-the-box, its electrical architecture supports third-party certification for North American markets upon request. For GLP/GMP workflows, the digital log of cumulative runtime, temperature setpoints, and power profiles provides auditable evidence of equipment usage history—aligning with FDA 21 CFR Part 11 data integrity expectations when paired with secure networked logging.

Software & Data Management

The KQ-250DV operates via embedded firmware with no external PC dependency. All operational parameters—including time, temperature, power, and liquid level—are stored in non-volatile memory and retained after power cycling. The system logs cumulative runtime automatically and displays it continuously, supporting preventive maintenance scheduling per ISO/IEC 17025 Clause 6.4.2. Though not equipped with USB or Ethernet connectivity, its digital interface permits manual documentation of batch-specific settings for SOP adherence. Optional RS-232 serial output (available on request) enables integration into centralized lab equipment monitoring systems for remote status verification and event-triggered alerts.

Applications

• Pre-analytical sample preparation: removal of residual salts, proteins, or lubricants from HPLC vials, GC liners, and ICP-MS nebulizers
• Microelectronics: cleaning photomasks, wafer carriers, and probe station fixtures prior to metrology
• Pharmaceutical QA: decontamination of stainless steel tablet punches and capsule fillers between batches
• Academic research: sonication-assisted nanoparticle dispersion, DNA shearing for NGS library prep, and tissue homogenization in buffer
• Materials science: debubbling resin composites before curing and removing sintering aids from ceramic green bodies

FAQ

Is the KQ-250DV suitable for use with flammable solvents?
No. The unit is rated for aqueous and mild alkaline solutions only. Use with flammable solvents (e.g., acetone, ethanol, hexane) requires explosion-proof modification and is not supported by default.
Can the ultrasonic frequency be changed on this model?
The KQ-250DV is factory-configured for 40 kHz operation. Frequency selection (20/25/28/40 kHz) is hardware-dependent and fixed per model variant; field conversion is not possible.
Does the unit include a timer with auto-shutoff?
Yes. The programmable timer supports durations from 1 to 480 minutes with automatic power cutoff and audible alert upon completion.
What is the warranty coverage and service support structure?
Shumei provides a 12-month limited warranty covering material and workmanship defects. Technical documentation, firmware updates, and OEM spare parts (transducers, heaters, control boards) are available directly through authorized distributors in EMEA and APAC regions.
How is calibration verified for temperature and timing accuracy?
Temperature accuracy is validated using NIST-traceable PT100 reference probes; timing fidelity is confirmed via oscilloscope-based pulse-width analysis. Calibration certificates are issued upon request for IQ/OQ validation packages.