Shumei KQ-500DM Quiet-Operation Ultrasonic Cleaner

Overview

The Shumei KQ-500DM Quiet-Operation Ultrasonic Cleaner is an industrial-grade general-purpose cleaning system engineered for precision laboratory, quality control, and small-scale manufacturing environments. It operates on the principle of ultrasonic cavitation—generating high-frequency mechanical vibrations (40 kHz) in liquid media to produce microscopic implosive bubbles that dislodge particulate contaminants, organic residues, and biofilms from submerged surfaces. Designed with acoustic attenuation in mind, its integrated sound-dampening lid and optimized transducer mounting architecture reduce operational noise to <60 dB(A), enabling sustained use in shared lab spaces without compromising auditory comfort or regulatory compliance with occupational noise exposure limits (OSHA 29 CFR 1910.95). The unit features a monolithic 304 stainless steel tank formed via deep-draw stamping—eliminating weld seams that could harbor corrosion or microbial growth—and a fully stainless steel chassis for long-term chemical resistance and structural integrity.

Key Features

• Digitally controlled touch interface with real-time display of temperature, time, and power level
• Continuously adjustable ultrasonic power output (0–100%) to match cleaning intensity requirements across diverse sample types—from delicate optical components to robust metal parts
• Precise digital temperature regulation from ambient to 80 °C, supported by an 800 W heating element and PID-based feedback control for thermal stability ±1 °C
• Programmable timer with 1-minute resolution over a 0–24 hour range, supporting unattended batch processing and protocol reproducibility
• Integrated safety systems including automatic shut-off upon low liquid level detection, overtemperature cutoff, and overcurrent protection
• Standard accessories include a 304 stainless steel mesh basket, support rack, sound-dampening lid, and manual inlet/drain valves—enabling flexible fluid management without external plumbing

Sample Compatibility & Compliance

The KQ-500DM accommodates a wide range of substrates—including glassware (vials, cuvettes, pipettes), metallic tools (tweezers, forceps, surgical instruments), ceramic substrates, and polymer-based components—provided they are compatible with aqueous or mild solvent-based cleaning media. Its 22.5 L tank volume supports simultaneous processing of multiple items while maintaining consistent energy distribution. The unit conforms to IEC 61000-6-3 (EMC emission standards) and IEC 61000-6-2 (immunity), and its construction adheres to ISO 8573-1 for compressed air–free operation (no pneumatic components). While not certified to ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, its programmable parameters, audit-ready timer logs, and stable thermal/sonic performance make it suitable for GLP-compliant workflows when integrated into documented SOPs.

Software & Data Management

The KQ-500DM operates via embedded firmware with no external PC dependency. All operational parameters—including start time, duration, set temperature, and power level—are stored in non-volatile memory and recalled at power-up. Though it lacks Ethernet or USB data export, the unit supports manual logging of cycle records for traceability. For laboratories requiring electronic record retention, integration with external environmental monitoring systems (via optional relay outputs or analog signal interfaces) is feasible through third-party DAQ modules compliant with ASTM E2500-13 guidelines for equipment qualification.

Applications

• Routine cleaning of analytical glassware prior to HPLC, GC, or spectrophotometric analysis
• Pre-sterilization decontamination of reusable labware in microbiology and cell culture facilities
• Removal of cutting oils, polishing compounds, and flux residues from precision machining parts
• Surface preparation of samples for SEM, XRD, or surface profilometry to minimize artifact introduction
• Extraction assistance for solid-phase microextraction (SPME) and leaching studies in environmental testing
• Supporting ASTM D2247 (standard practice for testing water resistance of coatings) and ISO 15528 (paints and varnishes sampling procedures)

FAQ

Is the KQ-500DM suitable for use with flammable solvents?
No. This unit is designed exclusively for aqueous or water-miscible cleaning solutions. Use with flammable or volatile organic solvents poses fire and explosion hazards and voids warranty.
Does the unit support continuous operation beyond 24 hours?
No. The maximum timer setting is 24 hours; extended cycles require manual reset. For uninterrupted operation, external programmable controllers must be interfaced via relay output.
Can the ultrasonic frequency be changed?
No. The transducer array is fixed at 40 kHz, optimized for broad-spectrum contaminant removal in mid-viscosity aqueous media. Variable-frequency operation is not supported.
What maintenance is required for long-term reliability?
Routine inspection of the tank seal integrity, periodic descaling using diluted citric acid (if hard water is used), and verification of lid gasket compression are recommended every 6 months. Transducers require no scheduled replacement under normal operating conditions.
Is calibration documentation provided with shipment?
The unit ships with a factory test report verifying nominal power output, temperature accuracy, and timer function. Full metrological calibration per ISO/IEC 17025 requires third-party service and is not included.