Retsch TG200 Fluidized Bed Quick Dryer
| Brand | Retsch |
|---|---|
| Origin | Germany |
| Model | TG200 |
| Heating Power | 2000 W |
| Blower Power | 750 W |
| Airflow Rate | 50–100 m³/h (continuously adjustable) |
| Temperature Range | 40–150 °C (continuously adjustable, dependent on airflow) |
| Drying Time | 5–20 min (sample-dependent) |
| Timer Range | 0–60 min (continuously adjustable) |
| Sample Size Limitation | >63 µm (bulk, free-flowing solids) |
| Chamber Capacity | 1 × 6 L or 3 × 0.3 L |
| Dimensions (W×H×D) | 400 × 1000 × 480 mm |
| Net Weight | ~21 kg |
| Compliance | CE-marked |
| Filtration Options | Standard filter lid + optional layered filter cap for fines <100 µm |
Overview
The Retsch TG200 Fluidized Bed Quick Dryer is an engineered solution for rapid, uniform, and thermally gentle moisture removal from bulk granular and particulate materials. Based on the fluidization principle—where heated air is forced upward through a perforated plate to suspend solid particles in a turbulent gas stream—the TG200 replicates industrial-scale drying dynamics at the laboratory level. Unlike convection or tray-based dryers, fluidization ensures minimal thermal stress, prevents particle agglomeration or surface caking, and delivers high reproducibility across replicate runs. Designed and manufactured in Haan, Germany, the instrument integrates precision airflow control, independent thermal regulation, and modular chamber configurations to support method development, quality control, and routine sample preparation in environmental, agricultural, energy, and materials laboratories.
Key Features
- Fluidized bed drying technology enabling homogeneous heat transfer and avoidance of localized overheating or crust formation
- Independent, continuously adjustable controls for airflow (50–100 m³/h), temperature (40–150 °C), and timer (0–60 min)
- Dual-chamber configuration flexibility: single 6 L drying vessel or three interchangeable 0.3 L vessels for parallel small-batch processing
- Quick-lock bayonet lid with integrated filtration system; optional multi-layer filter cap available for sub-100 µm particulates
- Robust stainless-steel construction with CE certification and compliance with IEC 61000-6-3 (EMC) and IEC 61000-6-2 (immunity) standards
- Compact footprint (400 × 1000 × 480 mm) optimized for benchtop integration in regulated lab environments
Sample Compatibility & Compliance
The TG200 is validated for drying free-flowing, non-cohesive solid samples with particle sizes exceeding 63 µm—including biomass (wood chips, sawdust, compost, silage), geological matrices (soil, coal, coke), industrial feedstocks (plastic granules, cellulose fibers), and organic waste streams (leather shavings, leaf litter). It is not suitable for powders, pastes, gels, or thermolabile compounds prone to decomposition below 40 °C. The system meets general safety requirements under EU Machinery Directive 2006/42/EC and carries CE marking. While the TG200 itself does not embed audit-trail or electronic signature functionality, its operational parameters are manually recorded and fully compatible with GLP-compliant documentation workflows when integrated into validated SOPs.
Software & Data Management
The TG200 operates via analog controls—mechanical temperature dial, airflow knob, and mechanical timer—with no embedded microprocessor or digital interface. This design prioritizes operational simplicity, long-term reliability, and immunity to software obsolescence or cybersecurity vulnerabilities. All process parameters (set temperature, airflow position, duration) are manually logged by the user. For laboratories requiring traceable data capture, external digital loggers (e.g., calibrated temperature/airflow sensors with timestamped output) may be deployed in conjunction with the instrument. No proprietary software, drivers, or cloud connectivity are provided or required.
Applications
The TG200 supports standardized and research-driven drying protocols across multiple sectors: pre-analysis moisture conditioning per ASTM D2234 (coal), ISO 11464 (textiles), or EN 14774 (biomass); rapid stabilization of environmental soil samples prior to TOC or heavy metal analysis; batch drying of biofuel pellets for calorific value determination (EN 14918); and homogenization-assisted drying of heterogeneous organic waste prior to proximate analysis. Its ability to preserve particle morphology and prevent segregation makes it especially valuable in feedstock qualification for pyrolysis, gasification, and anaerobic digestion studies.
FAQ
What types of samples are incompatible with the TG200?
Samples with particle size <63 µm, cohesive or sticky consistency (e.g., clays, sludges), or low thermal stability (decomposing below 40 °C) are not suitable.
Can the TG200 be used for GMP-regulated drying steps?
It may be incorporated into GMP workflows as a qualified auxiliary device, provided procedural controls, calibration records, and operator training are documented per Annex 15 and ICH Q5C guidelines.
Is temperature calibration traceable to national standards?
The unit includes a factory-calibrated analog thermometer; users must perform periodic verification using NIST-traceable reference probes per ISO/IEC 17025 requirements.
Does the TG200 meet FDA 21 CFR Part 11 requirements?
No—it lacks electronic records or signatures; however, manual logs generated during its use can satisfy Part 11 if maintained within a compliant document management system.
What maintenance is required for long-term performance?
Routine cleaning of the perforated plate, filter elements, and blower inlet; annual inspection of heating element resistance and airflow integrity is recommended.
