Elma Select Series Ultrasonic Cleaner

Overview

The Elma Select Series Ultrasonic Cleaner is a precision-engineered, general-purpose laboratory ultrasonic cleaning system designed for reproducible, non-destructive cleaning of delicate instruments, glassware, surgical tools, electronic components, and analytical sample preparation vessels. Based on the principle of cavitation—where high-frequency sound waves (37 kHz) generate microscopic vacuum bubbles in liquid media that implode with localized energy—the system delivers consistent mechanical agitation without thermal or chemical degradation. Engineered for reliability in regulated environments, the Select series complies with core design expectations for ISO 13485-aligned medical device reprocessing workflows and supports GLP-compliant documentation when integrated with external logging systems.

Key Features

• Cavitation-Optimized Transducer Array: Uniform 37 kHz frequency distribution across the stainless-steel tank ensures homogeneous energy delivery, minimizing hot spots and enhancing cleaning consistency across complex geometries.
• Programmable Thermal Management: Digital temperature control (displayed simultaneously in °C and °F) enables precise setpoint definition between ambient and 80°C, with configurable hold duration (1 minute to 6 hours), critical for thermolabile samples such as polymer-coated sensors or enzymatic assay plates.
• Multi-Mode Ultrasonic Operation: Five distinct operating modes—Dynamic (modulated amplitude sweep), Pulse (intermittent burst cycles), Sweep (frequency modulation ±1 kHz), Eco (reduced power for low-soil loads), and Degas (optimized for solvent deaeration)—allow method-specific adaptation without hardware modification.
• Memory-Based Protocol Storage: Four user-defined cleaning protocols—including time, temperature, and mode selection—can be saved and recalled, supporting standardized operating procedures (SOPs) and reducing operator-dependent variability in QC/QA labs.
• Integrated Acoustic Enclosure: The hinged, transparent sound-dampening lid attenuates airborne noise to ≤65 dB(A) at 1 m distance while permitting real-time visual monitoring and preventing solvent evaporation during extended cycles.
• Manual Fill/Drain Interface: A front-mounted, ergonomic valve allows controlled liquid introduction and disposal, compatible with both aqueous and low-viscosity organic solvents (e.g., isopropanol, acetone) under fume hood conditions.

Sample Compatibility & Compliance

The Elma Select accommodates standard laboratory ware up to 10 L total volume, including volumetric flasks, Petri dishes, pipette tips, chromatography vials, and small-scale metal or ceramic components. Its 316L stainless-steel tank resists corrosion from neutral and mildly alkaline cleaning solutions (pH 6–10), meeting ASTM F1497 requirements for ultrasonic cleaning equipment used in biomedical device reprocessing. While not certified as an automated sterilizer, the system supports validated cleaning steps within FDA 21 CFR Part 820 and ISO 15883 frameworks when paired with documented detergent validation and post-cycle drying protocols.

Software & Data Management

The Elma Select operates via an embedded microcontroller interface with no external PC dependency. All operational parameters—including elapsed time, current temperature, active mode, and remaining cycle duration—are displayed on a high-contrast LED screen. Though the unit lacks built-in data export or audit trail functionality, its deterministic behavior (fixed power output, repeatable timer resolution ±1 sec, temperature stability ±0.5°C) enables manual logbook entry aligned with ALCOA+ principles. For laboratories requiring electronic records, integration with third-party environmental monitoring systems (via optional analog output modules) supports 21 CFR Part 11–compliant data capture when configured with appropriate access controls and backup policies.

Applications

• Pre-analytical sample preparation in clinical chemistry and IVD labs (e.g., removal of protein residues from cuvettes and flow cells)
• Cleaning of HPLC autosampler vials, GC liners, and mass spectrometry source components
• Decontamination of reusable surgical instruments prior to autoclaving in hospital central sterile supply departments (CSSD)
• Surface contaminant removal from semiconductor wafers, MEMS devices, and optical lenses
• Assisted solvent extraction of botanical matrices in phytochemical research
• Disaggregation of nanoparticle suspensions and colloidal stabilization studies

FAQ

Is the ultrasonic power output adjustable?
No. The Elma Select delivers a fixed 800 W nominal acoustic power output optimized for 37 kHz resonance in the 10 L tank geometry.
Can this unit be used with flammable solvents?
Only under strict engineering controls: operation must occur inside a certified explosion-proof fume hood with grounded tank and solvent-resistant gasketing; consult local EHS guidelines prior to use.
Does the system include a heater calibration certificate?
Factory calibration is performed per Elma internal standards; traceable NIST-certified calibration is available as an optional service at time of purchase.
What maintenance is required for long-term performance?
Routine inspection of transducer integrity, periodic descaling with citric acid solution (if using hard water), and verification of lid seal compression every 6 months are recommended.
Is remote monitoring or network connectivity supported?
No. The Elma Select is a standalone instrument without Ethernet, USB, or wireless interfaces; all control and feedback remain local.