MOTIS SCT Solid Combustibility Tester
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | SCT |
| Pricing | Available Upon Request |
Overview
The MOTIS SCT Solid Combustibility Tester is a precision-engineered apparatus designed to quantitatively assess the propagation behavior of flame across solid materials under standardized thermal ignition conditions. It operates on the principle of linear flame spread measurement—evaluating both the ignitability and the combustion front velocity along a defined sample geometry. This method is grounded in classical fire science principles where combustion sustainability depends on heat feedback from the flame to the unburned substrate, coupled with pyrolysis kinetics and mass transfer of volatile fuels. The instrument conforms to internationally recognized test methodologies for classifying solids according to their hazard potential in industrial handling, storage, and transportation contexts—particularly relevant for powders, granules, and pastes used in chemical manufacturing, pharmaceutical processing, and additive manufacturing supply chains.
Key Features
- Standardized triangular cross-section mold (250 mm length × 10 mm height × 20 mm base width), fabricated from anodized aluminum for dimensional stability, thermal resistance (>400 °C), and electrical insulation.
- Dual longitudinal boundary plates extending 2 mm above the mold’s triangular profile, ensuring consistent sample confinement and minimizing lateral heat loss during flame propagation.
- Controlled ignition source: a calibrated gas burner producing a non-luminous, low-temperature flame (<1000 °C) with stable stoichiometry and reproducible thermal flux at the sample surface.
- Non-porous, non-combustible, low-thermal-conductivity test board (e.g., ceramic-fiber composite or high-density calcium silicate) serving as inert substrate to isolate sample-specific combustion dynamics from substrate interference.
- Modular sample holder design accommodating powder, granular, and semi-solid (paste-like) specimens without pre-compaction or binder addition—preserving native particle morphology and packing density.
- Integrated timing system synchronized with visual flame-front detection, enabling precise measurement of burn time over the 250 mm test length and derivation of mean linear combustion rate (mm/s).
Sample Compatibility & Compliance
The SCT supports heterogeneous solid-phase samples including organic and inorganic powders (e.g., metal alloys, polymer resins, APIs), agglomerated granules (e.g., fertilizer blends, food starches), and viscous pastes (e.g., battery electrode slurries, pigment dispersions). It is validated for use in accordance with GB/T 21846–2008 (“Determination of Combustibility of Solid Chemical Products for Industrial Use”), GB/T 21618–2008 (“Test Method for Burning Rate of Flammable Solids – Hazardous Materials”), and the legacy French standard NFT 20-42 (1985). These standards align with UN Manual of Tests and Criteria, Part III, Subsection 33.2.1, forming the technical basis for GHS Category 1/2 flammability classification and supporting SDS Section 9 (Physical and Chemical Properties) reporting. The system architecture enables traceable calibration and operator-independent test execution required for GLP-compliant laboratories.
Software & Data Management
While the base SCT configuration operates via manual observation and stopwatch-based timing, optional digital upgrade kits integrate high-resolution thermal imaging (640 × 480 IR resolution, ±2 °C accuracy) and synchronized video capture (120 fps) for automated flame-front tracking. Exported data includes timestamped position vs. time profiles, derived combustion velocity curves, and statistical summaries (mean, SD, CV%) across replicate runs. All digital records comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate) and support audit-ready archiving. Optional software modules provide FDA 21 CFR Part 11–compliant user access control, electronic signatures, and immutable audit trails for regulated environments.
Applications
- Hazard classification of raw materials prior to bulk handling in chemical plants and warehouses.
- Formulation screening for flame-retardant additives in polymer composites and battery cathode materials.
- Process safety assessment of dried intermediates in API synthesis where residual solvent or exothermic decomposition may influence combustibility.
- Validation of dust explosion mitigation strategies by correlating linear burn rate with minimum ignition energy (MIE) and deflagration index (KG) data.
- Regulatory submission support for REACH registration dossiers and transport classification under ADR/RID/IMDG Code.
FAQ
What sample mass is required for a valid test?
Typically 12–15 g of material is sufficient to fully fill the 250 mm × 10 mm × 20 mm mold cavity without voids; exact mass depends on bulk density and flow characteristics.
Can the SCT be used for hygroscopic or air-sensitive samples?
Yes—optional glove-box integration allows inert-atmosphere loading and testing under nitrogen or argon to prevent oxidation or moisture uptake prior to ignition.
Is operator training included with purchase?
Comprehensive on-site or virtual training is provided, covering standard operating procedures, calibration verification, troubleshooting common anomalies (e.g., incomplete ignition, premature extinguishment), and interpretation of pass/fail criteria per GB/T 21618.
Does the system meet requirements for third-party certification bodies?
The SCT’s mechanical design, documented calibration protocol, and adherence to referenced national standards enable successful ISO/IEC 17025 accreditation audits when operated within a certified laboratory quality management system.
