KQ-300DB Desktop Digital Ultrasonic Cleaner

Overview

The KQ-300DB Desktop Digital Ultrasonic Cleaner is an engineered solution for precision cleaning, degassing, emulsification, homogenization, extraction, and cell disruption in laboratory, academic, and light industrial environments. It operates on the principle of ultrasonic cavitation—generating high-frequency (40 kHz) mechanical vibrations via piezoelectric transducers bonded to the bottom of a 304 stainless steel tank. These vibrations induce microscopic bubble formation and implosion in the cleaning medium, producing localized pressures exceeding 1000 atm and temperatures up to 5000 K at collapse points—enabling non-destructive yet highly effective removal of particulates, oils, biofilms, and contaminants from delicate components such as optical lenses, surgical instruments, microfluidic devices, PCBs, and biological samples. Designed for reproducibility and operational continuity, the unit integrates real-time digital monitoring and failsafe protection logic compliant with general laboratory safety expectations.

Key Features

• Digital microcontroller-based control system with persistent memory for time, temperature, and power settings across power cycles
• 6 independently driven 50 W ultrasonic transducers (total 300 W output), ensuring uniform energy distribution across the 10 L tank volume
• Precision temperature regulation (ambient to 80 °C, ±1 °C accuracy) with dual-sensor feedback and automatic heater cutoff
• Programmable timer (1–99 minutes) with countdown display and audible end-of-cycle alert
• Integrated low-level liquid detection circuitry that halts ultrasonic operation if fluid volume falls below safe threshold
• Robust 304 stainless steel tank and outer chassis; argon-welded stainless steel mesh basket for corrosion resistance and structural integrity
• Comprehensive electronic protection suite: over-temperature, over-voltage, over-current, and thermal runaway safeguards
• Cumulative operating hour counter (up to 999,999 h) supporting maintenance scheduling and GLP-aligned equipment lifecycle documentation
• Front-panel LED display showing set/actual temperature, elapsed time, remaining time, power level, and fault codes
• Standard drain valve for rapid, spill-free tank emptying—critical for solvent recovery or multi-step cleaning protocols

Sample Compatibility & Compliance

The KQ-300DB accommodates a broad range of sample formats including glassware (vials, cuvettes, pipette tips), metal components (surgical tools, watch parts), ceramics, silicon wafers, and polymer substrates. Its 300 × 240 × 150 mm internal tank geometry supports immersion of objects up to 140 mm in height. Compatible cleaning media include aqueous alkaline solutions, ethanol, isopropanol, acetone, and specialized ultrasonic detergents—provided vapor pressure and flash point remain within safe operational limits per IEC 61010-1. While not certified to specific ISO/IEC 17025 or ASTM D4295 standards out-of-the-box, the device’s repeatable frequency stability, calibrated temperature control, and auditable operational logging (via cumulative hour counter and parameter memory) support alignment with internal QA/QC procedures and basic GxP documentation requirements.

Software & Data Management

The KQ-300DB operates without external software or PC connectivity. All configuration, execution, and status data are managed locally via its embedded 8-bit microcontroller firmware. Parameter settings—including time, temperature, and power—are retained in non-volatile memory after shutdown. The cumulative hour counter serves as a passive audit trail for preventive maintenance intervals (e.g., transducer performance verification every 2000 h). For laboratories requiring electronic records under FDA 21 CFR Part 11 or EU Annex 11, integration with external environmental monitoring systems (via optional analog voltage output modules, sold separately) enables timestamped logging of operational states into validated LIMS or ELN platforms.

Applications

• Routine cleaning of HPLC vials, GC autosampler needles, and chromatography columns
• Pre-analytical sample preparation: tissue homogenization, nanoparticle dispersion, DNA shearing
• Removal of flux residues from printed circuit boards prior to AOI inspection
• Decontamination of reusable labware in teaching labs and QC facilities
• Accelerated solvent extraction of plant metabolites or soil-bound contaminants
• Ultrasonic-assisted degassing of solvents prior to vacuum filtration or HPLC mobile phase preparation
• Surface activation of polymers and composites prior to coating or bonding

FAQ

What is the recommended cleaning solution for routine use?
Aqueous alkaline detergent solutions (pH 9–11) are optimal for general organic residue removal; avoid strong acids or halogenated solvents unless verified compatible with stainless steel and transducer encapsulation.
Can the unit operate continuously for extended periods?
Yes—continuous operation is supported up to 99 minutes per cycle; for longer processes, sequential cycles with ≥5-minute cooling intervals are advised to maintain transducer longevity.
Is the stainless steel mesh basket included with the unit?
Yes—the argon-welded 304 stainless steel basket is standard equipment and designed for full submersion without resonance-induced vibration transfer.
Does the KQ-300DB meet international electrical safety standards?
It complies with GB 4706.1 (Chinese national equivalent of IEC 60335-1) and carries CCC certification; CE marking is not applicable as it is domestically manufactured and distributed for non-EU markets.
How is calibration verified for temperature and timing functions?
Temperature calibration may be field-verified using a traceable NIST-certified thermometer immersed at tank center; timer accuracy is factory-tested to ±0.5% deviation over full range and requires no user recalibration.