Supmile KQ218 Benchtop Ultrasonic Cleaner

Overview

The Supmile KQ218 is a compact, benchtop ultrasonic cleaner engineered for routine laboratory cleaning tasks requiring consistent cavitation energy delivery in small-volume applications. It operates on the principle of piezoelectrically generated high-frequency sound waves (40 kHz) transmitted through aqueous or mild solvent-based cleaning media, inducing controlled micro-cavitation that dislodges particulate contaminants, organic residues, and loosely adhered biofilms from surfaces of immersed components. Designed for reliability in QC labs, academic teaching facilities, and instrument maintenance workstations, the KQ218 delivers stable acoustic output with minimal thermal drift during standard 1–10 minute cycles. Its 0.6 L stainless steel tank—fabricated from ASTM A240 Type 304 stainless steel—ensures corrosion resistance against common cleaning solutions including diluted alkaline detergents, isopropyl alcohol (IPA), and deionized water. The unit employs a mechanically actuated timer interface, eliminating software dependencies and supporting operation in environments where electromagnetic interference or IT policy restrictions limit digital controllers.

Key Features

• Robust 304 stainless steel tank with seamless welds and polished interior finish for long-term chemical compatibility and ease of decontamination
• Optimized transducer array delivering 70 W total ultrasonic power at 40 kHz—engineered to balance cleaning efficacy with low acoustic noise emission
• Integrated sound-dampening lid reduces airborne noise to ≤55 dB(A) at 1 m distance, meeting ISO 7779-compliant ambient lab requirements
• Manual fill-and-drain system with no integrated pump—designed for controlled fluid handling in non-GMP settings where solution change frequency is low and operator oversight is preferred
• Mechanical timer with tactile feedback and discrete 1-minute increments (1–10 min), ensuring repeatable exposure duration without firmware updates or calibration drift
• Standard accessories include a removable 304 stainless steel mesh basket (mesh size: 1.2 mm) and non-slip rubber feet for vibration isolation on laminar flow hoods or benchtop surfaces

Sample Compatibility & Compliance

The KQ218 accommodates small-format laboratory items including pipette tips, microcentrifuge tubes (up to 15 mL), glass slides, optical filters, watch parts, dental instruments, and printed circuit board (PCB) subassemblies. It is not intended for sterilization or endotoxin removal; validation per ISO 13408-1 or AAMI ST79 is not supported. While not certified to UL 61010-1 or IEC 61000-6-3 out-of-the-box, its construction complies with general electrical safety principles for Class I laboratory equipment. Users performing cleaning validation under GLP or ISO/IEC 17025 frameworks should document bath temperature stability (±2 °C over 10 min), degassing time, and cleaning agent concentration as part of method qualification.

Software & Data Management

The KQ218 operates without embedded firmware, network connectivity, or data logging capability. All operational parameters are set manually via front-panel controls. This architecture eliminates cybersecurity concerns associated with IoT-enabled devices and supports audit-ready workflows in regulated environments where electronic records must comply with FDA 21 CFR Part 11—by design, no electronic signatures, audit trails, or data export functions are present. Temperature monitoring requires external calibrated thermometers; no internal sensor is provided.

Applications

• Routine pre-analysis cleaning of HPLC vials, GC autosampler trays, and spectrophotometer cuvettes
• Removal of polishing compounds and metal fines from precision-machined calibration standards
• Debris clearance from MEMS devices and microfluidic chips prior to bonding or inspection
• Preparation of electron microscopy grids and TEM sample holders
• Cleaning of reusable labware in teaching laboratories where simplicity and durability are prioritized over automation

FAQ

Is the KQ218 suitable for cleaning delicate optics or coated lenses?
Yes—when used with low-surface-tension solvents (e.g., 99.9% IPA) and short cycle times (≤3 min), it effectively removes dust and fingerprint residue without abrasion. Avoid alkaline solutions on anti-reflective coatings.
Does the unit include heating functionality?
No. The KQ218 is a non-heated ultrasonic cleaner. Bath temperature rise during operation is typically ≤5 °C over 10 minutes due to acoustic energy dissipation.
Can the transducers be replaced in the field?
Transducer replacement requires factory service; the unit is not designed for user-accessible transducer swaps. Warranty coverage includes transducer performance verification at time of shipment.
What is the expected service life under continuous daily use?
With proper maintenance—including regular tank descaling using 5% citric acid solution every 200 operating hours—the core transducer assembly maintains ≥90% nominal power output for ≥5 years.
Is CE or RoHS marking applied to this model?
The KQ218 complies with RoHS Directive 2011/65/EU for restricted substances. CE marking is not affixed, as the device falls outside the scope of EU Machinery or EMC directives for standalone ultrasonic cleaners without programmable logic.