Shumei KQ-700GVDV Benchtop Tri-Frequency Programmable Temperature-Controlled Ultrasonic Cleaner

Overview

The Shumei KQ-700GVDV is a benchtop tri-frequency programmable temperature-controlled ultrasonic cleaner engineered for precision cleaning of delicate laboratory and industrial components. It operates on the principle of cavitation—where high-frequency sound waves generate microscopic vacuum bubbles in liquid media that implode with localized energy, dislodging contaminants from surfaces without mechanical abrasion. Unlike single-frequency units, the KQ-700GVDV integrates three discrete ultrasonic frequencies (45 kHz, 80 kHz, and 100 kHz), enabling selective optimization for varying substrate geometries, contaminant types (e.g., particulate, organic film, or flux residues), and material sensitivities. The system incorporates integrated heating (0–80 °C) and active cooling (350 W), permitting precise thermal stabilization during extended cleaning cycles—a critical capability for temperature-sensitive samples such as optical lenses, semiconductor wafers, microfluidic devices, and calibrated metrology tools. Its 27 L stainless steel tank (304 grade) features fully sealed construction to minimize acoustic leakage and thermal loss, supporting reproducible, GLP-aligned cleaning protocols.

Key Features

• Tri-frequency ultrasonic generation (45 / 80 / 100 kHz) with independent frequency selection and adjustable dwell time per frequency (0–999 s)
• Digital microprocessor control with real-time display of bath temperature (setpoint and actual), ultrasonic power (%), elapsed time, and liquid level
• Precision temperature regulation with ±2 °C accuracy across 0–80 °C range, supported by 800 W heating and 350 W Peltier-based cooling modules
• Adjustable ultrasonic power output (40–100% of 700 W nominal), enabling gentle decontamination of fragile substrates or aggressive removal of tenacious residues
• Electrically actuated fill-and-drain system with automatic low-level cutoff and overflow protection
• Integrated acoustic insulation: double-walled tank construction with sound-dampening lid reduces ambient noise to ≤65 dB(A) at 1 m distance
• Comprehensive safety monitoring: real-time detection and visual alert for overtemperature, overcurrent, overvoltage, low liquid level, and dry-run conditions
• Stainless steel 304 tank and accessories—including mesh basket and support rack—ensure corrosion resistance and long-term compatibility with aqueous and mild solvent-based cleaning solutions

Sample Compatibility & Compliance

The KQ-700GVDV accommodates a broad spectrum of sample types, including glassware (vials, cuvettes, pipette tips), metal parts (surgical instruments, precision gears), ceramic substrates, silicon wafers, and polymer-based microcomponents. Its tri-frequency architecture allows users to select optimal acoustic energy distribution: lower frequencies (45 kHz) deliver higher cavitation intensity for robust macro-particulate removal; mid-range (80 kHz) balances penetration and surface gentleness for general labware; and high-frequency (100 kHz) provides fine-scale cleaning with minimal surface erosion—ideal for MEMS devices and coated optics. The unit meets CE electromagnetic compatibility (EMC) directives and conforms to IEC 61000-6-3/6-4 for industrial environments. While not certified to ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, its digital logging capabilities (time-stamped parameter records) support internal validation and audit readiness under GLP/GMP frameworks when paired with documented SOPs.

Software & Data Management

The KQ-700GVDV employs an embedded single-chip microcontroller with non-volatile memory to retain up to 10 user-defined cleaning programs. Each program stores frequency sequence, power level, temperature setpoint, timer duration, and ramp profiles. All operational parameters—including actual bath temperature, instantaneous power draw, and cycle completion status—are displayed on a high-contrast LED interface and retained in onboard memory for post-cycle review. Though it lacks Ethernet or USB data export, the system supports manual documentation via timestamped operator logs. For laboratories requiring electronic record integrity, integration with external environmental monitoring systems (via optional analog voltage outputs for temperature/power) enables traceable linkage to LIMS or ELN platforms. Firmware updates are performed locally via secure service port access.

Applications

• Pre-analytical preparation of HPLC vials, GC autosampler trays, and spectrophotometer cells
• Cleaning of reusable surgical instruments prior to sterilization in healthcare QA labs
• Removal of photoresist residues and etch byproducts from semiconductor mask blanks and wafer carriers
• Decontamination of electron microscopy grids and TEM specimen holders
• Routine maintenance of viscometers, density meters, and other precision fluid-handling instrumentation
• Supporting ASTM D2240 (durometer calibration) and ISO 11140-5 (sterilization indicator validation) through standardized cleaning validation protocols

FAQ

Can the KQ-700GVDV operate continuously for extended periods (e.g., overnight)?
Yes—the system includes thermal overload protection, automatic shutdown on low liquid level, and duty-cycle management to sustain stable operation over multi-hour cycles. Continuous use beyond 8 hours requires verification of local cooling capacity and solution replenishment.
Is the 100 kHz mode suitable for cleaning microfluidic chips with sub-50 µm channels?
Yes—100 kHz generates smaller, more uniformly distributed cavitation bubbles, reducing risk of channel blockage or surface pitting while effectively removing nanoscale organic contaminants.
Does the unit support validation documentation for ISO/IEC 17025-accredited labs?
It provides essential parameter logging (time, temp, power); however, full compliance requires supplementary calibration certificates for temperature and power sensors, plus procedural validation per ISO/IEC 17025 Clause 6.4.2.
What cleaning solutions are compatible with the stainless steel tank and transducers?
Aqueous alkaline, neutral, and mildly acidic solutions (pH 4–10) are recommended. Avoid halogenated solvents, strong oxidizers (e.g., undiluted HNO₃), and solutions exceeding 80 °C during heating cycles.
How is acoustic uniformity verified across the 27 L tank?
Shumei performs aluminum foil erosion testing per ASTM E1755-00 during factory acceptance. Users may conduct periodic verification using calibrated hydrophones or standardized foil test kits aligned with ISO 13075-2.