Shumei KQ-700E Benchtop Ultrasonic Cleaner

Overview

The Shumei KQ-700E is a benchtop ultrasonic cleaner engineered for precision cleaning of laboratory glassware, precision components, surgical instruments, and small-volume sample containers in QC, R&D, and clinical settings. It operates on the principle of acoustic cavitation—generating high-frequency mechanical vibrations (40 kHz) through piezoelectric transducers bonded to the stainless steel tank base. These vibrations propagate through the cleaning medium (typically aqueous or solvent-based solutions), inducing controlled microbubble formation and implosion that dislodge particulate contaminants, organic residues, and biofilms from surfaces without mechanical abrasion. Its 22.5 L capacity, combined with robust 700 W ultrasonic output and integrated 1000 W PTC heating system, supports consistent thermal energy delivery across the bath volume, enabling optimized cleaning kinetics for temperature-sensitive protocols. Designed for routine use in ISO 17025-accredited labs and GLP-compliant environments, the KQ-700E delivers repeatable performance under standardized operating conditions.

Key Features

• Stainless steel tank and housing constructed from AISI 304 grade stainless steel for corrosion resistance, structural integrity, and long-term compatibility with common cleaning solvents and disinfectants.
• PTC surface-mounted heating system ensures uniform thermal distribution and stable temperature control within the 0–80 °C range, minimizing thermal gradients across the bath.
• Dedicated mechanical timer with 1–20 minute adjustable intervals provides deterministic process repeatability—critical for method validation and SOP adherence.
• Integrated auto-frequency sweeping circuitry continuously modulates the drive signal near the resonant frequency to maintain optimal cavitation efficiency despite load variation or solution aging.
• Sound-dampening stainless steel lid reduces ambient noise emission during operation and minimizes solvent evaporation at elevated temperatures.
• Manual fill-and-drain interface enables precise fluid management without reliance on external plumbing—ideal for mobile or space-constrained lab setups.
• Standard accessories include a perforated stainless steel mesh basket and lid, supporting secure placement and retrieval of delicate or irregularly shaped items.

Sample Compatibility & Compliance

The KQ-700E accommodates a broad range of sample formats including volumetric flasks, pipette tips, syringe filters, chromatography vials, microscope slides, and metal instrument sets. Its 500 × 300 × 150 mm internal tank dimensions permit simultaneous cleaning of multiple standard labware items while maintaining adequate solution depth for effective cavitation coupling. The unit complies with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity) standards. While not certified for medical device reprocessing under ISO 15883 or FDA 510(k), it is routinely deployed in pre-sterilization cleaning steps aligned with AAMI ST79 guidelines when used with validated cleaning chemistries. Its mechanical controls and absence of network connectivity simplify audit readiness for GMP/GLP documentation requirements.

Software & Data Management

The KQ-700E employs an analog control architecture with no embedded firmware, digital display, or data logging capability. All operational parameters—including time, temperature, and power—are set via calibrated mechanical dials and switches. This design eliminates software validation obligations under FDA 21 CFR Part 11 and simplifies IQ/OQ protocol execution in regulated environments where traceability relies solely on operator-recorded log entries. Temperature stability is verified using external calibrated thermometers per ASTM E2251, and timer accuracy is confirmed against NIST-traceable stopwatches during periodic equipment verification.

Applications

• Routine decontamination of HPLC/GC vials, autosampler needles, and column frits prior to analytical runs.
• Removal of polishing compounds and machining oils from optical components and metrology fixtures.
• Pre-cleaning of tissue culture plates and electrophoresis apparatus before sterilization.
• Supporting ASTM D2621 and ISO 14971 risk management workflows by reducing bioburden on reusable diagnostic tools.
• Assisting USP and compounding hygiene protocols through validated removal of cytotoxic residue from laminar flow hoods and isolator surfaces.

FAQ

Is the ultrasonic frequency adjustable?
No—the KQ-700E operates exclusively at a fixed 40 kHz frequency. Frequency tuning or multi-frequency selection is not supported.
Can this unit be used with flammable solvents?
No—this model lacks explosion-proof certification and is rated for aqueous or low-volatility non-flammable cleaning solutions only.
Does it support continuous operation beyond 20 minutes?
No—the mechanical timer caps maximum cycle duration at 20 minutes; extended cleaning requires manual reset.
What maintenance is required for long-term reliability?
Transducer bonding integrity and heater element continuity should be verified annually; tank interior inspection for pitting or weld seam degradation is recommended every six months.
Is calibration documentation provided with shipment?
Factory calibration certificates for time and temperature are not included but can be generated upon request as part of optional qualification services.