Brookfield 625FS Automated Buffer Dispenser
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 625FS |
| Pricing | Upon Request |
Overview
The Brookfield 625FS Automated Buffer Dispenser is a precision-engineered fluid handling module designed exclusively for integration with the Brookfield 620M Quad-Channel Microvessel Myograph System. It operates on a programmable peristaltic or syringe-based dispensing principle—engineered to deliver consistent, contamination-free buffer solution to isolated tissue bath chambers under controlled physiological conditions. Its primary function is to automate the replenishment of physiological saline, Krebs-Henseleit, or other assay-specific buffers during vascular reactivity studies, thereby minimizing manual intervention, reducing operator-induced variability, and supporting GLP-compliant experimental workflows in cardiovascular pharmacology and smooth muscle physiology research.
Key Features
- Single-button activation for simultaneous or selective dispensing to up to four independent tissue bath chambers
- Dual preset volume modes (6 mL and 8 mL) with full user-defined volume programming (range: 1–15 mL, configurable in 0.1 mL increments)
- Integrated pressure-sensing and flow verification circuitry to confirm successful delivery and detect occlusion or air bubble formation
- Modular mechanical interface compatible with standard 620M myograph bath assemblies without hardware modification
- Chemically resistant fluid path constructed from PTFE, medical-grade silicone tubing, and stainless-steel fittings compliant with USP Class VI standards
- Low-dead-volume design (< 120 µL per channel) to preserve sample integrity and minimize buffer carryover between runs
Sample Compatibility & Compliance
The 625FS is validated for use with aqueous buffered solutions commonly employed in ex vivo vascular studies—including HEPES-buffered saline, modified Krebs-Henseleit solution, Tyrode’s solution, and calcium-free EGTA-containing buffers. All wetted components meet ISO 10993-5 (cytotoxicity) and ISO 10993-10 (irritation/sensitization) biocompatibility requirements. The device supports audit-ready operation in environments governed by FDA 21 CFR Part 11 when paired with validated 620M system software; electronic logs record timestamped dispense events, operator ID, volume selected, and chamber assignment—enabling full traceability for regulatory submissions and internal QA review.
Software & Data Management
The 625FS communicates via RS-232 or USB-C serial interface with the 620M control platform. Dispense parameters are configured through the Brookfield MyoSoft™ v4.x application, which provides a dedicated “Buffer Management” tab within the experimental protocol editor. All dispense actions are synchronized with force transducer acquisition timestamps and embedded into the raw data file (.myo format), ensuring temporal alignment between buffer addition and contractile response onset. Audit trails include digital signatures, change history, and exportable CSV reports compliant with ISO/IEC 17025 documentation standards for accredited laboratories.
Applications
- Automated buffer exchange during concentration-response curve generation (e.g., phenylephrine, acetylcholine, sodium nitroprusside)
- Controlled washout intervals in multi-cycle agonist/antagonist protocols
- Standardized normalization procedures across multi-day longitudinal studies
- High-throughput screening of vasoactive compounds using parallelized vessel preparations
- Teaching laboratory setups where reproducibility and procedural consistency are critical learning objectives
FAQ
Is the 625FS compatible with third-party myograph systems?
No—the 625FS is mechanically and electrically engineered only for seamless integration with the Brookfield 620M Quad-Channel Microvessel Myograph. Interfacing with non-Brookfield platforms is not supported.
Can dispense volume be adjusted during an ongoing experiment?
Volume parameters must be set prior to initiating the protocol; real-time adjustment during active data acquisition is disabled to maintain experimental integrity and audit compliance.
What maintenance is required for long-term reliability?
Users should perform quarterly calibration verification using gravimetric measurement (NIST-traceable balance), inspect tubing for fatigue every 200 cycles, and replace peristaltic pump tubing annually or after 5,000 actuations—whichever occurs first.
Does the 625FS support sterile filtration inline?
Yes—optional 0.22 µm PVDF membrane filter cartridges (Brookfield P/N FIL-625F) can be installed upstream of the dispensing manifold without compromising flow rate or accuracy.
Is remote operation possible via network connection?
Remote triggering is limited to local host PC control via USB or RS-232; Ethernet or Wi-Fi connectivity is not implemented to preserve signal isolation and electromagnetic compatibility in electrophysiological recording environments.
