Branson CPX3800H-C Benchtop Ultrasonic Cleaner

Overview

The Branson CPX3800H-C is a precision-engineered benchtop ultrasonic cleaner designed for laboratories, quality control facilities, and small-scale industrial applications requiring consistent, repeatable cleaning performance. It operates on the principle of acoustic cavitation: high-frequency (40 kHz) ultrasonic energy is transmitted through a liquid medium—typically water or aqueous detergent solutions—generating microscopic vacuum bubbles that rapidly collapse upon contact with solid surfaces. This implosive action dislodges particulate contaminants, organic residues, biofilms, and loosely adhered oxides without mechanical abrasion or surface damage. The CPX3800H-C integrates a Langevin-type transducer assembly—comprising a robust metal-ceramic piezoelectric stack bonded directly to the stainless steel tank wall—to ensure uniform energy distribution and long-term structural integrity. Its compact footprint (396 × 318 × 376 mm), lightweight design (8.2 kg), and PP-plastic corrosion-resistant housing make it suitable for shared lab benches, cleanroom-adjacent workspaces, and regulated environments where chemical compatibility and ease of decontamination are essential.

Key Features

• Real-time power tracking circuitry maintains stable ultrasonic output across varying load conditions and fluid levels.
• Sweep frequency modulation (±1 kHz around 40 kHz) eliminates standing wave nodes, ensuring homogeneous cavitation intensity throughout the 5.7 L tank volume (290 × 150 × 150 mm internal dimensions).
• Degassing mode with programmable duration up to 99 minutes facilitates solvent conditioning prior to critical cleaning or analytical sample preparation steps.
• Two-stage power selection (high/low) enables optimization for delicate components (e.g., optical lenses, microfluidic chips) versus heavily soiled instrumentation parts.
• Digital temperature control (range: ambient to 69°C; heating power: 205 W) supports thermally enhanced cleaning protocols compliant with ASTM D2603 and ISO 13845 standards.
• Integrated sound-dampening lid doubles as a drip tray and incorporates a manual drain valve for rapid, spill-free fluid removal.
• Vertical PCB orientation and elevated control panel placement minimize moisture ingress risk—critical for sustained operation in humid or high-turnover lab settings.
• Calibration-accessible temperature sensor allows field verification against NIST-traceable reference thermometers per GLP documentation requirements.
• PP exterior housing resists common laboratory solvents (e.g., isopropanol, acetone, dilute acids/bases); 304 stainless steel tank ensures non-reactivity and ease of passivation.

Sample Compatibility & Compliance

The CPX3800H-C accommodates a broad range of sample geometries and materials—including glassware (vials, cuvettes, pipette tips), metal tools (tweezers, forceps, surgical instruments), ceramic substrates, and polymer-based microdevices—without compromising dimensional stability or surface finish. Its 40 kHz frequency balances penetration depth and cavitation intensity, making it appropriate for both fine particulate removal and gentle biofilm disruption. The unit meets UL 61010-1 and IEC 61010-1 safety standards for laboratory electrical equipment. While not certified for sterile processing per ISO 13485, its validated cleaning repeatability supports pre-sterilization cleaning validation under FDA 21 CFR Part 820 and EU MDR Annex I requirements. Optional accessories—including perforated baskets, beaker holders, and test tube racks—are constructed from 316 stainless steel or PTFE-coated aluminum to prevent cross-contamination.

Software & Data Management

As a standalone analog-digital hybrid instrument, the CPX3800H-C does not feature network connectivity or embedded software. All operational parameters—including time (0–99 min or continuous), temperature setpoint, and ultrasonic power level—are configured via intuitive front-panel membrane buttons and an LED display. Critical process parameters (timer start/end, overtemperature fault, lid-open detection) trigger audible alerts and visual status indicators. For auditability in GxP environments, users may log settings manually or integrate the unit into electronic lab notebooks (ELNs) via external timestamped observation. Temperature calibration records and routine maintenance logs (e.g., tank inspection, transducer impedance checks) are recommended per ISO/IEC 17025 Clause 6.4.2.

Applications

• Pretreatment of HPLC vials, GC autosampler trays, and ICP-MS sample introduction components to eliminate trace metal carryover.
• Cleaning of electron microscopy grids, TEM specimen holders, and AFM probes prior to imaging.
• Removal of flux residues from printed circuit boards (PCBs) during R&D prototyping.
• Decontamination of reusable pipette tips and centrifuge rotors in molecular biology workflows.
• Pre-analytical preparation of environmental filter membranes and sediment cores for gravimetric or elemental analysis.
• Supporting ASTM E1252-98 (standard guide for UV-Vis-NIR spectral data interpretation) by ensuring optical component cleanliness prior to baseline measurement.

FAQ

What is the maximum operating temperature of the CPX3800H-C?

The heater is rated for temperatures up to 69°C, optimized for aqueous detergent activation without excessive solvent evaporation.
Is the ultrasonic power output continuously adjustable?

No—it offers discrete high/low power selection, calibrated to deliver reproducible cavitation intensity at 130 W nominal output.
Can this unit be used with flammable solvents?

Not recommended. The CPX3800H-C lacks explosion-proof certification; only water-based or flashpoint >60°C solutions should be used.
How often should the tank be descaled?

Depends on local water hardness; monthly inspection and citric acid descaling (per Branson Technical Bulletin TB-UL-007) is advised for hard-water regions.
Does the unit include a warranty and service support?

Branson provides a standard 2-year limited warranty covering parts and labor; authorized service centers in North America, Europe, and APAC support calibration and transducer replacement.