Branson CPX3800-C Benchtop Ultrasonic Cleaner

Overview

The Branson CPX3800-C is a benchtop ultrasonic cleaner engineered for precision cleaning and sample preparation in analytical, pharmaceutical, clinical, and materials laboratories. It operates on the principle of high-frequency acoustic cavitation—generating controlled micro-bubbles in liquid media that collapse violently upon contact with surfaces, dislodging particulate contaminants, organic residues, and biofilms without mechanical abrasion. With a nominal frequency of 40 kHz and a rated output power of 130 W, the CPX3800-C delivers consistent energy transfer across its 5.7 L stainless steel tank (304 grade), optimized for uniform cavitation distribution via Branson’s proprietary sweep-frequency transducer architecture. Designed for reproducible, non-destructive cleaning of delicate components—including optical lenses, microfluidic devices, surgical instruments, chromatography columns, and electronic assemblies—the unit complies fully with international electromagnetic compatibility (EMC) and electrical safety standards including UL 61010-1, CSA C22.2 No. 61010-1, EN 61000-6-3, and EN 61000-6-4. All CPX-series units are certified by TÜV SÜD to IEC 61010-1, confirming robust protection against electric shock, fire hazard, and mechanical failure under routine laboratory conditions.

Key Features

• Automatic Power Tracking: Maintains stable ultrasonic output regardless of load variation, temperature drift, or solvent composition—ensuring repeatability across multiple users and protocols.
• Dual-Power Mode Selection: High/low power settings (130 W / ~65 W) allow fine-tuning for sensitive substrates (e.g., MEMS devices) versus heavily soiled parts (e.g., metal fixtures).
• Programmable Degassing Function: Up to 99-minute degassing cycle removes dissolved gases from solvents prior to ultrasonic treatment—critical for eliminating false cavitation voids and improving cleaning efficacy in low-surface-tension fluids.
• Langevin-Type Transducer Assembly: Ceramic-metal composite transducers mounted via advanced adhesive bonding ensure long-term mechanical integrity and thermal stability; no mechanical fasteners prone to fatigue or loosening.
• Vertical Circuit Board Orientation: PCBs are mounted vertically within sealed compartments to minimize condensation ingress and enhance moisture resistance during prolonged operation.
• Ergonomic Control Interface: Digital front-panel controls positioned above the tank prevent liquid exposure; intuitive keypad supports timer setting, power selection, and degas activation with tactile feedback.
• Optimized Tank Geometry: Internal dimensions (290 × 150 × 150 mm) and calibrated fill line ensure optimal acoustic coupling and standing-wave uniformity—validated using hydrophone mapping per ASTM E1000 guidelines.
• Integrated Sound-Dampening Lid: Hinged lid reduces ambient noise to <55 dB(A) at 1 m distance and doubles as a drip tray with integrated drain valve for rapid, spill-free fluid evacuation.

Sample Compatibility & Compliance

The CPX3800-C accommodates a broad range of sample types and container formats—including beakers, vials, Petri dishes, filter holders, and custom jigs—within its open-top stainless steel tank. Its polypropylene (PP) housing provides chemical resistance to common aqueous detergents, ethanol, isopropanol, acetone, and diluted acids/bases. The unit is compatible with both aqueous and mild organic cleaning solutions, though chlorinated solvents require external ventilation per OSHA 1910.1200 and local VOC regulations. All models meet ISO 13485-aligned manufacturing practices and support GLP/GMP documentation workflows through traceable operational logs (when paired with optional Branson Connect software). Regulatory compliance includes FDA 21 CFR Part 11 readiness via audit-trail-enabled firmware versions (v2.1+), supporting validation in regulated environments.

Software & Data Management

While the CPX3800-C operates as a standalone instrument, it is compatible with Branson Connect—a PC-based utility enabling remote parameter configuration, runtime logging, and export of timestamped event records (start/stop times, power mode, timer status). Firmware updates preserve calibration integrity and introduce enhanced diagnostic routines, including real-time transducer impedance monitoring and thermal derating alerts. For laboratories requiring full 21 CFR Part 11 compliance, optional hardware modules provide electronic signatures, role-based access control, and immutable audit trails—fully aligned with Annex 11 and ALCOA+ data integrity principles.

Applications

• Cleaning of HPLC/GC autosampler vials, syringe filters, and column frits
• Removal of flux residues from printed circuit boards (PCBs) prior to AOI inspection
• Preparation of TEM/SEM specimens to eliminate surface carbon contamination
• Decontamination of reusable pipette tips and electrophoresis combs
• Extraction support for solid-phase microextraction (SPME) and leachables testing
• Ultrasonic-assisted cell lysis in microbiology and molecular biology workflows
• Restoration of antique optics, watch components, and dental prosthetics

FAQ

Is the CPX3800-C suitable for cleaning delicate glassware without etching or pitting?

Yes—when operated with appropriate aqueous detergents and low-power mode, the 40 kHz frequency minimizes surface erosion while maintaining effective particle removal. Avoid alkaline solutions above pH 11.5 for extended durations.
Does the unit include a heater or temperature control?

No—the CPX3800-C does not feature built-in heating or temperature regulation. For thermally assisted cleaning, external water baths or heated immersion tanks must be used in conjunction with manual temperature monitoring.
Can the CPX3800-C be validated for use in GMP environments?

Yes—its design supports IQ/OQ/PQ protocols. Documentation packages, calibration templates, and traceable serial-numbered transducer certificates are available upon request from authorized Branson distributors.
What maintenance is required for long-term reliability?

Routine tasks include periodic tank inspection for pitting or mineral buildup, cleaning of the drain valve assembly, and verification of lid seal integrity. Transducers require no scheduled replacement under normal usage per Branson’s 5-year performance warranty.
How does the sweep-frequency technology improve cleaning uniformity?

By modulating the drive frequency ±1 kHz around 40 kHz, standing wave nodes are continuously displaced—eliminating “dead zones” and ensuring consistent cavitation intensity across the entire tank volume, as verified by ASTM E1000-compliant hydrophone scans.