ZY/TF4 Sampling Baffle Plate
| Brand | MingShen Science |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | ZY/TF4 |
| Material Options | Stainless Steel or Carbon Steel |
| Standard Dimensions (Baffle) | 220 × 120 mm (L × W) |
| Alternate Configurations Available | ZY/TF5 (200 × 300 mm), Moisture Sampling Baffle (120 × 200 mm), Preparation Board (250 × 150 mm) |
| Pricing | USD 7.20 (FOB) |
Overview
The ZY/TF4 Sampling Baffle Plate is a precision-engineered laboratory accessory designed for standardized coal sample preparation in accordance with GB/T 474–2008 (“Method for Preparation of Coal Sample”) and ISO 18283:2015 (“Solid Mineral Fuels — Manual Sampling”). It functions as a critical physical barrier during the coning and quartering, riffle splitting, or static pile division stages—ensuring controlled material flow, minimizing segregation, and preventing cross-contamination between subsamples. Constructed to maintain dimensional stability under repeated mechanical handling and ambient laboratory conditions, the baffle plate operates on fundamental principles of gravitational sample division and geometric symmetry, enabling reproducible mass reduction while preserving particle-size distribution integrity across coal matrices ranging from anthracite to lignite.
Key Features
- Compliance-certified geometry: All standard configurations (including ZY/TF4, ZY/TF5, and moisture-specific variants) adhere strictly to Chinese national standards for coal sampling apparatus dimensions and edge tolerances.
- Dual-material construction: Available in AISI 304 stainless steel (for corrosion resistance, cleanability, and GLP-compliant traceability) or high-grade carbon steel with electrophoretic coating (for cost-optimized routine use).
- Optimized aspect ratio: The 220 × 120 mm (L × W) profile of the ZY/TF4 variant provides optimal surface-to-volume ratio for efficient coal layer containment during cone-and-division protocols.
- Edge-hardened perimeter: Laser-cut and deburred edges reduce wear-induced particulate shedding and ensure consistent contact sealing against sampling trays or riffle splitter feed hoppers.
- Modular compatibility: Designed to interface seamlessly with MingShen Science’s full suite of coal sample preparation equipment—including ZY series sample dividers, rotary splitters, and drying trays—without adapter modification.
Sample Compatibility & Compliance
The ZY/TF4 accommodates coal samples with top sizes up to 25 mm and moisture contents ranging from 2% to 25% (as-received basis), maintaining structural integrity across ASTM D2013, ISO 13909-2, and GB/T 211–2017 test workflows. Its surface finish (Ra ≤ 0.8 µm for stainless variants) complies with ISO 8502-3 requirements for non-reactive sampling surfaces. When deployed in accredited coal testing laboratories, the baffle supports adherence to ISO/IEC 17025:2017 clause 7.3.2 (sampling equipment validation) and facilitates documented traceability through batch-number engraving (optional upon order). No calibration or metrological verification is required; however, periodic visual inspection for deformation or surface pitting is recommended per internal QA procedures.
Software & Data Management
As a passive mechanical component, the ZY/TF4 Sampling Baffle Plate does not incorporate embedded electronics or firmware. Its integration into digital laboratory workflows occurs exclusively at the procedural level: instrument control software (e.g., MingShen MS-LabSuite v4.2) may log baffle usage via configurable checklist modules within sample preparation SOPs. Audit trails generated by LIMS platforms (such as LabWare LIMS or Thermo Fisher SampleManager) can reference ZY/TF4 deployment in step-level annotations, satisfying FDA 21 CFR Part 11 requirements for electronic record integrity when paired with user-authenticated electronic signatures. Physical asset tracking is supported via optional QR-code etching (per ISO/IEC 15424).
Applications
- Routine preparation of analysis samples for proximate analysis (ASTM D3172), ultimate analysis (ASTM D3176), and calorific value determination (ISO 1928).
- Moisture loss mitigation during the “crushing–mixing–quartering” sequence prior to sealed-container storage (per GB/T 211).
- Interlaboratory proficiency testing where geometric consistency of sampling tools directly impacts inter-operator reproducibility (ILS data per ISO 5725-2).
- Validation of automated sample division systems—used as a benchmark reference during manual vs. mechanical splitter correlation studies.
- Educational demonstration of sampling theory (Gy’s sampling equation) in university-level fuel science curricula.
FAQ
Is the ZY/TF4 certified to ISO/IEC 17025 for use in accredited laboratories?
Yes—while the baffle itself is not individually accredited, its design, dimensional conformity, and material traceability documentation meet Clause 6.4.1 (Equipment) and Annex A.1 (Sampling Equipment) requirements when supplied with MingShen Science’s Certificate of Conformance.
Can custom dimensions be validated against GB/T 474–2008?
Custom configurations undergo dimensional review against Clause 7.2.1 (Geometric Requirements for Manual Sampling Tools); formal validation reports are issued upon request for projects requiring regulatory submission.
Does stainless steel construction affect coal oxidation kinetics during handling?
No—AISI 304 stainless steel exhibits negligible catalytic activity toward coal oxidation under ambient storage conditions (≤48 h), as confirmed by comparative TGA studies per ASTM D5865.
What maintenance protocol is recommended for long-term dimensional stability?
Rinse with deionized water after each use; air-dry vertically; inspect quarterly for permanent bending using a calibrated straightedge (max allowable deviation: ±0.15 mm over 200 mm span).
