SHUMEI KQ-250V Benchtop Ultrasonic Cleaner

Overview

The SHUMEI KQ-250V is a benchtop ultrasonic cleaner engineered for precision cleaning of laboratory glassware, precision components, optical elements, and small-volume instrumentation parts. It operates on the principle of cavitation—generated by high-frequency (40 kHz) acoustic energy transmitted through liquid media—to dislodge particulate contaminants, organic residues, and loosely adhered biofilms from submerged surfaces. Designed for routine use in QC laboratories, research facilities, and clinical preparation areas, the KQ-250V delivers consistent cleaning performance across aqueous and mild solvent-based solutions. Its sealed 304 stainless steel tank ensures corrosion resistance and long-term structural integrity, while integrated thermal insulation and an acoustic-dampening lid minimize operational noise and heat loss—supporting stable temperature maintenance during extended cleaning cycles.

Key Features

• Robust 304 stainless steel construction for chemical resistance and durability in demanding lab environments
• PTC surface-mount heating system enabling precise temperature control within 0–80 °C range; rapid thermal response with uniform bath distribution
• Fixed-frequency 40 kHz ultrasonic generation with automatic frequency sweeping to optimize transducer coupling and maintain consistent cavitation intensity over time
• Dedicated mechanical timer (1–20 minutes) with audible end-of-cycle alert for repeatable process execution
• Integrated sound-dampening lid with secure latch mechanism to reduce ambient noise levels and prevent solution evaporation
• Manual fill-and-drain interface with ergonomic valve placement—compatible with standard laboratory sink connections
• Five-transducer array (50 W each, total 250 W nominal output) mounted directly to the tank base for efficient energy transfer and minimal standing-wave interference

Sample Compatibility & Compliance

The KQ-250V accommodates a broad range of sample geometries via its 13 L tank volume and internal dimensions (300 × 240 × 180 mm), supporting standard beakers, volumetric flasks, Petri dishes, pipette tips, surgical instruments, and PCB substrates. The unit is compatible with deionized water, alkaline detergents, ethanol, isopropanol, and other low-volatility solvents commonly employed in analytical and biomedical cleaning protocols. While not certified to ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, its mechanical control architecture and traceable timer/heating functions support GLP-compliant documentation when paired with external loggers. All electrical components comply with IEC 61010-1 safety standards for laboratory equipment.

Software & Data Management

As a mechanically controlled instrument, the KQ-250V does not incorporate embedded microprocessor-based software or digital data logging. Its operation relies on discrete electromechanical controls—timer dial, temperature knob, and on/off switch—ensuring operational simplicity, reduced failure points, and immunity to firmware corruption. For regulated environments requiring audit trails, users may integrate external USB temperature loggers or programmable timers with timestamped output. The absence of network connectivity eliminates cybersecurity risks associated with IoT-enabled cleaners and aligns with IT policies restricting unmanaged device access in secure lab networks.

Applications

• Cleaning of HPLC vials, GC autosampler inserts, and spectrophotometer cuvettes prior to quantitative analysis
• Removal of solder flux and oxide layers from electronic assemblies and semiconductor wafers
• Preparation of microscopy slides and TEM grids to eliminate dust and grease artifacts
• Routine decontamination of reusable pipette tips, forceps, and dissection tools in teaching labs
• Supporting ASTM D2621 and ISO 15528 sample preparation workflows where ultrasonic agitation is specified
• Validation of cleaning efficacy in pharmaceutical manufacturing support labs (non-GMP grade use)

FAQ

Is the ultrasonic frequency adjustable?
No—the KQ-250V operates exclusively at 40 kHz. Frequency selection is fixed to ensure optimal cavitation efficiency for general-purpose cleaning applications.
Can this unit be used with flammable solvents?
It is not recommended. The unit lacks explosion-proof certification and uses non-intrinsically safe heating and transducer circuits. Only aqueous or low-flashpoint solvents (<60 °C flash point) should be used under strict supervision.
Does it include a filtration system?
No—filtration is not integrated. Users may add inline filters to the drain line or perform periodic manual tank cleaning to maintain solution purity.
What is the expected service life of the transducers?
Under normal operating conditions (≤8 hrs/day, proper degassing, and avoidance of dry-run), the PZT ceramic transducers typically retain >90% nominal output for 5,000+ operating hours.
Is calibration documentation provided?
Factory calibration certificates are not included as standard. However, temperature accuracy (±2 °C) and timer repeatability (±5 sec) can be verified using NIST-traceable reference instruments.