MingShen Science ZY/TF Series Sealed Stainless Steel Sample Containers

Overview

The MingShen Science ZY/TF Series Sealed Stainless Steel Sample Containers are precision-engineered receptacles designed for the secure, contamination-free storage and transport of bulk solid samples—particularly coal, mineral aggregates, geological specimens, and other hygroscopic or oxidation-sensitive materials. Constructed using cold-rolled AISI 201 or fully austenitic AISI 304 stainless steel, each container features a seamless cylindrical body with a hermetically sealed lid equipped with a silicone or EPDM gasket to ensure air-tight integrity. The design adheres to fundamental principles of sample preservation: minimizing moisture exchange, preventing particulate loss, and inhibiting atmospheric oxidation during interim storage or inter-laboratory transfer. These containers comply with the mechanical and material requirements outlined in ASTM D3173 (moisture determination in coal), ISO 18283 (manual sampling of coal and coke), and GB/T 19494.2 (Chinese national standard for coal sampling). Their geometry—square cross-section variants (250×250 mm to 600×600 mm) and circular configurations (e.g., ZY/TF25, ZY/TF15, ZY/TF16)—is optimized for stacking stability, volumetric consistency, and compatibility with standard laboratory weighing platforms and automated sample handling workflows.

Key Features

• Hermetic sealing system with compression-fit lid and elastomeric gasket (silicone or EPDM), tested to maintain <0.5 mL/min air leakage rate under 5 kPa differential pressure
• Corrosion-resistant construction: choice of AISI 201 (cost-optimized) or AISI 304 (enhanced pitting resistance, suitable for humid or saline environments)
• Smooth, non-porous interior surface finish (Ra ≤ 0.8 µm) to prevent sample adhesion and enable complete recovery during subsampling
• Reinforced rim and base geometry to withstand repeated stacking up to 5 tiers without deformation
• Laser-etched model designation and batch identifier on exterior sidewall for traceability and GLP-compliant recordkeeping
• No internal welds or crevices—fully drawn-and-ironed or deep-drawn fabrication ensures structural homogeneity and eliminates trapping zones

Sample Compatibility & Compliance

These containers are validated for use with coal (bituminous, sub-bituminous, lignite), crushed ores, fly ash, biomass pellets, and granular environmental soil samples. They meet the dimensional and sealing performance criteria referenced in ISO 13909-3 (coal sampling—part 3: mechanical sampling), ASTM D7508 (standard practice for determining total moisture in coal), and USP (environmental monitoring of cleanrooms—applicable to sample containment integrity). All units undergo 100% visual inspection and leak testing prior to dispatch. Documentation includes material certification (mill test report per ASTM A240/A240M), RoHS compliance statement, and declaration of conformity to EU Directive 2011/65/EU. For regulated QC/QA labs operating under GMP or ISO/IEC 17025, serial-numbered containers support audit-ready sample chain-of-custody protocols.

Software & Data Management

While the ZY/TF containers are passive hardware components, they integrate seamlessly into digital sample lifecycle management ecosystems. Each unit’s laser-etched serial number can be scanned via mobile barcode readers and logged into LIMS platforms (e.g., LabWare, STARLIMS, Thermo Fisher SampleManager) to associate physical samples with analytical batches, moisture test records, and storage location metadata. Optional RFID tag integration (upon request) enables real-time inventory tracking and automated shelf-life alerts. All container-related metadata—including material grade, manufacturing date, calibration history (if used with certified mass standards), and cleaning cycle logs—can be maintained in accordance with FDA 21 CFR Part 11 requirements when deployed within validated workflows.

Applications

• Total moisture determination in coal preparation plants and power generation facilities
• Primary and secondary sampling in mineral exploration and metallurgical testing laboratories
• Long-term archival storage of reference materials where oxidative degradation must be suppressed
• Transport of certified reference materials (CRMs) between accredited testing bodies
• Field collection of environmental soil or sediment cores requiring ambient moisture retention
• Use as secondary containment vessels in automated sample digestion or leaching systems

FAQ

What is the maximum recommended stacking height for ZY/TF containers during storage?

Up to five (5) units may be safely stacked under ambient conditions; stacking beyond this requires evaluation of floor loading capacity and container fill level.
Can ZY/TF containers be autoclaved?

AISI 304 variants are compatible with steam sterilization at 121°C for 20 minutes; AISI 201 is not recommended for repeated autoclaving due to sensitization risk.
Is third-party certification available for moisture barrier performance?

Yes—certification reports per ASTM E96 (water vapor transmission rate) and ISO 15106-3 (moisture vapor transmission testing) can be provided upon order confirmation.
Do you offer custom engraving or labeling services?

Custom laser marking—including lab-specific identifiers, barcodes, or regulatory symbols—is available with minimum order quantity of 50 units.
How often should gaskets be replaced to maintain seal integrity?

Under routine use (≤5 open/close cycles per week), gaskets retain functional integrity for ≥12 months; visual inspection for compression set or cracking is advised quarterly.