DRETOP FS-550 High-Speed Dispersing Mixer
| Brand | DRETOP |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | FS-550 |
| Instrument Type | Electric Stirrer |
| Maximum Mixing Volume | 3 L |
| Speed Range | 0–9999 rpm |
Overview
The DRETOP FS-550 High-Speed Dispersing Mixer is an integrated laboratory-scale mixing and dispersion system engineered for precision control in R&D and pilot-scale formulation development. It operates on the principle of high-shear hydrodynamic dispersion, utilizing a rotating circular-toothed dispersing disc to generate intense turbulent flow, vortex formation, and radial shear forces within the sample medium. This mechanism enables efficient solid–liquid wetting, particle deagglomeration, stabilization of colloidal suspensions, and uniform homogenization of viscous or non-Newtonian systems. Designed for compatibility with both aqueous and solvent-based formulations, the FS-550 serves as a critical unit operation in pre-production validation workflows across chemical, pharmaceutical, cosmetic, and advanced materials laboratories.
Key Features
- Brushless frequency-controlled AC motor delivering stable torque output across the full speed range (0–9999 rpm), with low thermal load and extended service life;
- Multi-turn analog speed dial with digital RPM display for precise, repeatable speed selection—no software dependency required;
- Interchangeable dispersing discs (standard 50 mm and 60 mm diameters) optimized for different rheological regimes and particle size distributions;
- Robust mechanical architecture featuring a manually adjustable vertical column with 200 mm lift travel, enabling optimal immersion depth control for variable batch volumes;
- Modular design supporting optional configurations including explosion-proof frequency inverters, double-jacketed sample vessels (for temperature-controlled processing), and custom shaft/disk assemblies;
- Noise-dampened housing and vibration-isolated base plate to maintain operational stability during high-RPM operation.
Sample Compatibility & Compliance
The FS-550 accommodates a broad spectrum of sample types—including water-based paints, oil-based resins, graphene dispersions, polymer emulsions, pharmaceutical suspensions, and high-viscosity adhesives—within its 3 L maximum working volume. Its stainless-steel wetted components comply with ISO 8502-3 for surface cleanliness assessment and meet general laboratory equipment hygiene standards per ISO/IEC 17025 Annex A. While not certified for GMP manufacturing environments, the device supports GLP-aligned documentation practices when paired with external audit trails (e.g., manual logbooks or time-stamped video recording). For applications requiring regulatory traceability, integration with validated third-party data acquisition systems is recommended to satisfy FDA 21 CFR Part 11 requirements for electronic records.
Software & Data Management
The FS-550 operates as a standalone instrument without embedded firmware or network connectivity. All operational parameters—including real-time RPM, total run time, and manual speed setting—are observable via the front-panel LCD. For laboratories requiring digital data capture, optional RS-485 or analog 0–10 V output interfaces can be retrofitted to feed speed and runtime signals into SCADA platforms, LIMS, or custom LabVIEW-based acquisition modules. No proprietary software is bundled; however, standard industrial communication protocols (Modbus RTU) are supported through add-on controller modules. Audit-ready operation is achievable via synchronized external timestamping and manual entry into controlled electronic notebooks compliant with ALCOA+ principles.
Applications
- Pre-formulation studies of pigment dispersions in coatings and inks;
- Rapid screening of surfactant efficacy in nanoparticle stabilization (e.g., carbon nanotubes, MXenes);
- Batch-wise homogenization of thermosetting resin systems prior to rheological or DSC analysis;
- Wetting and deagglomeration of ceramic powders in slurry preparation for tape casting;
- Development of topical pharmaceutical gels and microemulsion bases under controlled shear history;
- Accelerated aging simulations via repeated high-shear cycling to assess suspension stability over time.
FAQ
Is the FS-550 suitable for continuous operation at maximum speed (9999 rpm)?
Continuous operation at top speed is not recommended beyond 15–20 minutes per cycle due to thermal accumulation in high-viscosity media; intermittent duty cycles with cooling intervals ensure motor longevity and measurement reproducibility.
Can the dispersing disc be sterilized for pharmaceutical use?
Yes—the standard 316L stainless-steel dispersing discs are autoclavable (121°C, 20 min, saturated steam); however, full-unit sterilization is not supported due to electronic component limitations.
What safety certifications does the FS-550 carry?
The unit conforms to IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emissions), and meets CE marking requirements under the Low Voltage Directive 2014/35/EU and Machinery Directive 2006/42/EC.
Does DRETOP provide calibration documentation?
Factory calibration of the speed sensor is performed prior to shipment, with traceable verification against a NIST-traceable tachometer; formal calibration certificates (ISO/IEC 17025 accredited) are available upon request at additional cost.
Is technical support available outside China?
Yes—DRETOP maintains authorized service partners in Germany, the USA, and Singapore, offering remote diagnostics, spare parts logistics, and on-site maintenance contracts under annual service agreements.
