Shumei KQ-100VDE Desktop Dual-Frequency Digital Ultrasonic Cleaner

Overview

The Shumei KQ-100VDE is a benchtop dual-frequency digital ultrasonic cleaner engineered for precision cleaning of delicate laboratory components, optical elements, microfluidic devices, and analytical instrumentation parts. It operates on the principle of acoustic cavitation—generating controlled microbubbles in liquid media through high-frequency mechanical vibrations transmitted via piezoelectric transducers bonded to the tank bottom. The dual-frequency capability (45 kHz and 80 kHz) enables optimized cleaning across heterogeneous sample geometries and contaminant types: lower frequencies deliver higher cavitation intensity for robust particulate removal from macroscopic surfaces, while higher frequencies produce finer, more uniformly distributed cavitation bubbles ideal for sub-micron residue removal from intricate features such as capillary bores, MEMS structures, or chromatography column fittings. Its 3 L stainless steel tank (230 × 140 × 100 mm internal dimensions) provides sufficient volume for batch processing of multiple small-to-medium-sized items without compromising acoustic field uniformity.

Key Features

• Dual-frequency operation (45 kHz / 80 kHz) with user-selectable switching intervals (1–999 s), enabling adaptive cleaning protocols for multi-layered or mixed-contaminant substrates.
• Digitally controlled ultrasonic power output (40–100% of 100 W total), allowing fine-tuning to prevent damage to sensitive samples such as coated lenses or thin-film sensors.
• Precise temperature regulation (10–80 °C) via PTC surface-heating elements integrated into the tank base; real-time digital display with over-temperature cutoff ensures thermal stability critical for enzymatic or solvent-based cleaning steps.
• Microcontroller-based interface with non-volatile memory: retains user-defined settings—including time, power, temperature, frequency mode, and switching interval—across power cycles.
• Comprehensive safety architecture: automatic shutdown triggered by low water level (110% rated), over-voltage (>242 V), or over-temperature (>85 °C); visual LED indicators for each fault condition.
• Acoustically insulated plastic lid minimizes airborne noise emission (<65 dB(A) at 1 m) and reduces solvent evaporation during heated operation.
• 304 stainless steel tank construction meets ISO 15190:2020 requirements for corrosion resistance and cleanability in regulated laboratory environments.

Sample Compatibility & Compliance

The KQ-100VDE accommodates a broad range of sample formats including glassware (vials, cuvettes, pipette tips), metal components (syringe needles, filter housings), ceramic substrates, and polymer-based microdevices. Its frequency flexibility supports cleaning validation per ASTM D2603 (Standard Test Method for Sonic Shear Stability of Lubricants) and ISO 13847 (Ultrasonic Cleaning of Medical Devices). While not certified for sterile processing under ISO 17664, it complies with general laboratory equipment safety standards IEC 61010-1 and EMC directive 2014/30/EU. The unit is suitable for use in GLP-compliant laboratories when operated with documented cleaning SOPs and routine verification of frequency output (via calibrated hydrophone) and temperature uniformity (±1.5 °C across tank volume).

Software & Data Management

This model does not include PC connectivity or proprietary software. All operational parameters are configured and monitored via an integrated 4-digit LED display with tactile membrane keypad. Parameter memory functions retain up to five independent cleaning profiles. For audit readiness in regulated environments, users may manually log cycle data—including start/end time, set temperature, applied power level, and frequency sequence—using standardized lab notebooks or LIMS-integrated electronic records. No firmware updates are required; the microcontroller firmware is factory-programmed and locked to ensure deterministic behavior compliant with FDA 21 CFR Part 11 expectations for manual data entry systems.

Applications

• Pre-analytical preparation of HPLC/GC sample vials and autosampler components to eliminate carryover contamination.
• Cleaning of quartz crystal microbalance (QCM) sensors and surface acoustic wave (SAW) devices prior to functional testing.
• Removal of photoresist residues from silicon wafers in microfabrication QA workflows.
• Decontamination of reusable pipette tips and electrophoresis combs in molecular biology labs.
• Restoration of tarnished optical mirrors and diffraction gratings without abrasive contact.
• Supporting ASTM E1665 verification of ultrasonic cleaning efficacy for aerospace component inspection.

FAQ

Does the KQ-100VDE support continuous operation beyond 480 minutes?
No—the maximum timer setting is 480 minutes (8 hours); extended cleaning requires manual restart.
Is the 45/80 kHz dual-frequency output simultaneous or alternating?
Frequencies alternate automatically at user-defined intervals; simultaneous dual-frequency excitation is not supported.
Can this unit be used with flammable solvents such as acetone or ethanol?
Only with appropriate explosion-proof ventilation and strict adherence to local chemical safety regulations; the unit lacks intrinsic safety certification for Class I, Division 1 environments.
What is the acoustic field uniformity specification across the tank volume?
Field uniformity is ±15% in cavitation intensity (measured as sonochemical yield of potassium iodide dosimetry) at nominal 100 W output and 25 °C water bath.
Is calibration documentation provided with the instrument?
Factory calibration certificates for temperature sensor and timer accuracy (±0.5 °C, ±0.5% of set time) are included; transducer frequency verification requires external hydrophone measurement.