Shumei KQ-500VDV Benchtop Tri-Frequency Digital Ultrasonic Cleaner

Overview

The Shumei KQ-500VDV is a benchtop tri-frequency digital ultrasonic cleaner engineered for precision cleaning of delicate laboratory components, optical elements, microfluidic devices, semiconductor wafers, and analytical instrumentation parts. It operates on the principle of acoustic cavitation—where high-frequency sound waves generate controlled micro-bubbles in liquid media that collapse violently upon contact with surfaces, dislodging particulate contaminants, organic residues, and thin-film deposits without mechanical abrasion. Unlike single-frequency units, the KQ-500VDV integrates three discrete ultrasonic frequencies—45 kHz, 80 kHz, and 100 kHz—each optimized for distinct cleaning mechanisms: lower frequencies (45 kHz) deliver higher cavitation intensity suitable for robust particulates; mid-range (80 kHz) balances energy and gentleness for general labware; and higher frequency (100 kHz) enables finer resolution cleaning of sub-micron features and sensitive substrates such as quartz cuvettes or MEMS devices. The unit employs piezoelectric transducers mounted directly to the tank base, each rated at 50 W and individually matched to its designated frequency band. An integrated auto-sweep function minimizes standing wave formation and ensures uniform energy distribution across the entire 27 L working volume.

Key Features

• Tri-frequency operation (45 / 80 / 100 kHz) with programmable switching intervals (1–999 s), enabling multi-stage cleaning protocols for complex contamination profiles
• Digital microcontroller-based interface with non-volatile memory for time, temperature, power level (40–100%), frequency selection, and water level settings
• AISI 304 stainless steel tank and housing for corrosion resistance, structural integrity, and compliance with ISO 15190 and GLP facility hygiene standards
• PTC surface-mount heating system (1000 W) with ±1 °C temperature stability across the 10–80 °C range, supporting aqueous and mild solvent-based cleaning chemistries
• Electrically actuated fill-and-drain system with integrated low-water-level detection and automatic shutdown to prevent transducer dry-run damage
• Acoustically insulated lid with silicone gasket seal, reducing ambient noise to ≤65 dB(A) at 1 m distance and minimizing heat loss during heated cycles
• Comprehensive safety monitoring: real-time display of over-temperature, over-voltage, over-current, and low-water conditions with audible/visual alerts

Sample Compatibility & Compliance

The KQ-500VDV accommodates standard laboratory vessels—including beakers, flasks, Petri dishes, chromatography vials, and custom fixtures—within its 500 × 300 × 180 mm internal tank. Its tri-frequency architecture allows optimization for diverse material classes: glassware, stainless steel tools, ceramic substrates, aluminum housings, and polymer-based microplates. The unit complies with IEC 61000-6-3 (EMC emission limits) and IEC 61010-1 (safety requirements for electrical equipment used in laboratory environments). While not certified for sterile processing per ISO 13485 or FDA 21 CFR Part 820, it supports GxP-aligned cleaning validation when operated within documented SOPs and paired with appropriate cleaning agents (e.g., Alconox®, Liquinox®) and rinse protocols. Routine calibration of temperature and timer functions is recommended per ASTM E2879-22 guidelines for ultrasonic cleaning performance verification.

Software & Data Management

The KQ-500VDV features an embedded firmware platform with no external PC dependency. All operational parameters—including cumulative runtime, last-used settings, and fault logs—are stored in EEPROM and accessible via the front-panel display. While it does not support USB or Ethernet connectivity, its parameter memory function satisfies basic traceability requirements for QC laboratories operating under ISO/IEC 17025 or internal quality systems. For facilities requiring electronic records, integration with Lab Information Management Systems (LIMS) can be achieved through optional RS-232 or analog output modules (available upon request). The device meets foundational data integrity expectations for non-regulated environments and serves as a validated cleaning station in pre-analytical workflows prior to HPLC, SEM, or XRD sample preparation.

Applications

• Cleaning of HPLC injection needles, autosampler vials, and column frits to prevent carryover and baseline drift
• Removal of photoresist residues and etch byproducts from silicon wafers and photomasks in microfabrication labs
• Decontamination of pipette tips, electrophoresis combs, and gel trays prior to nucleic acid analysis
• Preparation of TEM grids and AFM cantilevers requiring particle-free surfaces
• Routine maintenance of viscometers, rheometers, and particle size analyzers where solvent-compatible cleaning is required
• Supporting ASTM D2621, ISO 14644-1, and USP particulate matter testing workflows through standardized rinsing protocols

FAQ

What is the purpose of tri-frequency operation?
Tri-frequency capability allows users to sequentially or simultaneously apply distinct ultrasonic energy profiles—enabling removal of both macro-scale debris and nano-scale films within a single cleaning cycle.
Can this unit be used with flammable solvents?
No. The KQ-500VDV is designed exclusively for aqueous and water-miscible, non-flammable cleaning solutions. Use of organic solvents such as acetone or ethanol is prohibited due to lack of explosion-proof certification.
Is the water level sensor calibrated for different cleaning solutions?
The capacitive water level sensor is factory-calibrated for deionized water and standard detergent solutions. Significant deviations in conductivity (e.g., >5 mS/cm) may affect accuracy; manual verification using the marked scale is advised.
Does the unit support continuous operation beyond 480 minutes?
No. The maximum timer setting is 480 minutes (8 hours). For extended processes, manual restart or external timer integration is required.
How often should transducer performance be verified?
We recommend quarterly verification using a calibrated hydrophone or aluminum foil erosion test per ASTM E1739-20 to ensure consistent cavitation output across all three frequencies.