ZiQi ZQ-20DHL 3L Benchtop Digital Ultrasonic Cleaner with Adjustable Power and Heating

Overview

The ZiQi ZQ-20DHL is a benchtop digital ultrasonic cleaner engineered for precision laboratory cleaning, degassing, and sample preparation tasks requiring controlled thermal and acoustic energy input. It operates on the principle of piezoelectric transduction—converting high-frequency electrical signals (40 kHz) into mechanical vibrations transmitted through the cleaning liquid—generating cavitation bubbles that collapse with localized energy release. This physical mechanism enables effective removal of particulate contaminants, organic residues, and adsorbed films from surfaces of delicate instruments, optical components, electronic parts, glassware, and biological samples without mechanical abrasion. Its integrated heating system (ambient to 80 °C) enhances solvent activity and accelerates dissolution kinetics, while digitally regulated power (50–120 W) and timer (1–30 min) ensure reproducible process conditions across routine QC workflows and research protocols.

Key Features

• High-reliability ultrasonic transducers fabricated with imported piezoceramic elements, delivering stable output and extended service life under continuous operation.
• Seamless one-piece stainless steel tank (304 grade), formed via deep-drawing rather than welding—eliminating crevices where contaminants or moisture may accumulate and improving corrosion resistance and structural integrity.
• Dual-layer construction: inner tank and outer chassis both made from electropolished 304 stainless steel, ensuring chemical compatibility with aqueous and mild solvent-based cleaning solutions.
• Stepless ultrasonic power adjustment (50–120 W) via digital interface, enabling optimization for sensitive substrates (e.g., microfluidic chips, MEMS devices) or heavily soiled samples.
• Precise digital temperature control (±1 °C accuracy typical) over ambient to 80 °C range, with independent heating element (200 W) and PID-regulated feedback loop for minimal thermal overshoot.
• Programmable timer (1–30 minutes) with automatic shutdown and audible end-of-cycle alert; display shows real-time elapsed time and set parameters simultaneously.
• Integrated sound-dampening lid reduces airborne noise to ≤55 dB(A) at 1 m distance, meeting ISO 7779-compliant acoustic performance for shared laboratory environments.

Sample Compatibility & Compliance

The ZQ-20DHL accommodates standard laboratory vessels including beakers (up to 1000 mL), Petri dishes, pipette tips, cuvettes, chromatography vials, and small-scale reaction flasks. Its 240 × 135 × 100 mm tank interior allows immersion of components up to 100 mm in height. The unit complies with IEC 61000-6-3 (EMC emission limits) and IEC 61010-1 (safety requirements for electrical equipment used in laboratory settings). While not certified for medical device reprocessing per ISO 15883 or sterilization per ANSI/AAMI ST79, it supports GLP-aligned cleaning validation when operated within documented SOPs—including parameter logging (via optional external data logger), routine calibration of temperature sensor (traceable to NIST standards), and periodic verification of ultrasonic field uniformity using aluminum foil test (per ASTM E1722).

Software & Data Management

The ZQ-20DHL features an embedded microcontroller-based interface with LED digital display—no proprietary software or PC connectivity is required for basic operation. All critical parameters (power level, temperature setpoint, timer duration) are stored in non-volatile memory and retained after power cycling. For laboratories implementing electronic recordkeeping under FDA 21 CFR Part 11, the unit may be integrated into broader lab infrastructure via external USB or RS-232 data loggers (sold separately) that capture timestamped operational data—including actual tank temperature, elapsed time, and power-on status—for inclusion in audit trails. Firmware updates are not supported; however, hardware design follows modular principles to facilitate component-level maintenance and long-term serviceability.

Applications

• Routine cleaning of HPLC columns, GC injectors, and spectrophotometer cuvettes prior to analysis.
• Pre-analytical sample preparation: cell lysis (soft tissue homogenization), DNA/RNA extraction support, nanoparticle dispersion stabilization.
• Removal of flux residues from printed circuit boards (PCBs) and soldering jigs in electronics QA labs.
• Degassing of solvents (e.g., acetonitrile, methanol) before HPLC mobile phase preparation to prevent pump cavitation and baseline drift.
• Supporting ASTM D2622 (XRF sample cup cleaning), USP environmental surface decontamination (non-sterile compounding), and ISO 14644-1 cleanroom tool maintenance protocols.

FAQ

Is the ZQ-20DHL suitable for use with flammable solvents?
No. The unit is designed exclusively for aqueous and low-volatility, non-flammable cleaning solutions. Use with alcohols, acetone, or chlorinated solvents poses fire and explosion hazards due to unsealed heating elements and lack of explosion-proof certification.
Does the unit include a drain valve?
No. The ZQ-20DHL lacks a built-in drain port; manual emptying is required using appropriate PPE and spill containment measures.
Can the ultrasonic frequency be changed?
No. The transducer array is fixed at 40 kHz, optimized for general-purpose cleaning efficacy and cavitation density balance. Frequency modulation is not supported.
What is the warranty coverage?
ZiQi provides a 12-month limited warranty covering defects in materials and workmanship under normal laboratory use conditions. Transducer performance degradation beyond 10% initial amplitude output is covered if verified by authorized service technician.
Is a stainless steel basket included?
A stainless steel mesh basket is available as an optional accessory (part number ZQ-BASKET-3L); it is not bundled with the base unit but is recommended for handling fragile or small-part loads.