ZiQi ZQ-20DH 3L Benchtop Digital Display Heated Ultrasonic Cleaner

Overview

The ZiQi ZQ-20DH is a benchtop heated ultrasonic cleaner engineered for precision laboratory and industrial cleaning applications requiring controlled thermal energy and consistent cavitation intensity. It operates on the principle of piezoelectric transduction at a fixed frequency of 40 kHz, generating high-frequency acoustic pressure waves in liquid media that induce micro-scale cavitation bubbles. Upon collapse, these bubbles release localized energy sufficient to dislodge particulate contaminants, organic residues, and surface-adhered films from immersed components. Unlike non-heated units, the integrated digital temperature control (ambient to 80 °C) enhances solvent activity—particularly for aqueous or mild alkaline solutions—improving removal efficiency of waxy, oily, or polymeric soils without compromising sample integrity. Designed for routine use in QC labs, R&D facilities, and academic institutions, the ZQ-20DH delivers reproducible cleaning performance across diverse substrates including metal parts, glassware, ceramic filters, semiconductor wafers, and biological sample holders.

Key Features

• Stainless steel tank (304 grade) formed via seamless deep-drawing process—eliminates weld seams and prevents electrolytic corrosion or leakage under prolonged thermal cycling
• Digital LED display with independent dual-parameter interface: real-time temperature readout (±1 °C accuracy) and countdown timer (1–30 min resolution)
• Thermostatically regulated heating system (200 W) with PID-based control logic ensures stable bath temperature within ±2 °C deviation over full operating range
• Integrated sound-dampening lid reduces ambient noise to ≤55 dB(A) at 1 m distance, supporting compliance with ISO 14040 occupational noise exposure guidelines
• Robust transducer array bonded directly to the tank bottom using aerospace-grade epoxy—optimized for uniform energy distribution across the 240 × 135 × 100 mm cleaning chamber
• Front-panel accessible fuse holder and overtemperature cut-off circuit (activated at 90 °C) meet IEC 61010-1 safety requirements for laboratory electrical equipment

Sample Compatibility & Compliance

The ZQ-20DH accommodates standard laboratory vessels—including beakers, Petri dishes, vials, and custom fixtures—within its 3 L working volume. Its non-aggressive 40 kHz frequency minimizes risk of surface pitting on delicate optics or polished metals while maintaining efficacy on machined surfaces and porous ceramics. The unit complies with CE marking directives (2014/30/EU EMC, 2014/35/EU LVD) and conforms to RoHS 2011/65/EU material restrictions. While not certified to UL or CSA standards, its construction aligns with GLP-aligned lab practices for instrument qualification: documented calibration procedures for temperature and timing functions are supported by user-accessible service manuals. Note: Use only low-foaming, non-halogenated cleaning solutions compatible with stainless steel and elevated temperatures; avoid chlorinated solvents above 60 °C per ASTM D4294 guidance.

Software & Data Management

The ZQ-20DH operates as a standalone analog-digital hybrid system with no embedded firmware or network connectivity. All operational parameters are set locally via tactile membrane switches and verified via front-panel LED indicators. For traceability in regulated environments, users may record settings manually in lab notebooks or integrate the unit into electronic lab notebook (ELN) workflows using external time-stamped loggers. Though lacking FDA 21 CFR Part 11-compliant audit trails, its deterministic behavior—no memory retention, no parameter auto-save—ensures procedural consistency across shifts and operators. Temperature and timer calibrations can be validated annually using NIST-traceable thermistors and stopwatch references per ISO/IEC 17025 clause 6.5.

Applications

• Cleaning of precision optical components prior to interferometric inspection
• Removal of flux residues from PCB assemblies before solderability testing (IPC-J-STD-001)
• Preparation of HPLC autosampler vials and syringe filters to minimize carryover
• Decontamination of reusable pipette tips and centrifuge rotors in biosafety Level 2 labs
• Cell lysis support for protein extraction protocols where mechanical shear must be minimized
• Ultrasonic degassing of mobile phase solvents prior to LC system priming

FAQ

Is the ultrasonic power output adjustable?
No—the ZQ-20DH delivers a fixed 120 W nominal acoustic power at 40 kHz. Power modulation is not implemented; intensity is managed indirectly via solution viscosity, temperature, and immersion depth.
Can this unit be used with organic solvents?
Only with low-volatility, non-flammable solvents rated for continuous operation up to 80 °C (e.g., isopropanol, ethanol/water mixtures). Flammable or chlorinated solvents require explosion-proof enclosures and are incompatible with this model.
Does the unit include a drain valve?
No—ZQ-20DH lacks an integrated drain port. Emptying requires manual tilting or siphoning. Drain functionality begins with the ZQ-30DH model and above.
What is the expected service life of the transducers?
Under normal usage (≤4 h/day, deionized water or mild detergent), transducers maintain ≥90% amplitude stability for 5,000 operating hours, consistent with IEC 60512-5-1 vibration endurance testing.
Is a stainless steel basket included?
No—the basket is an optional accessory (part number ZQ-BASKET-3L). Standard delivery includes only the tank, lid, and power cord.