Sodium sulfate inspection
Sodium sulfate inspection is a critical quality control process conducted at various stages of the logistics chain. It mitigates major trade risks associated with discrepancies in cargo specifications, quantity shortages, or incomplete documentation during sodium sulfate export and import operations.
CISS GROUP provides sodium sulfate inspection services to large agribusinesses and international trading companies at intermediate storage warehouses, elevators, factories, and ports worldwide.
Sodium sulfate requires storage in closed facilities to prevent humidification and contamination. It is fire- and explosion-proof and classified as a fourth hazard class substance due to its effects on the human body. The shelf life of sodium sulfate is limited to six months from the date of manufacture. Transportation is allowed in packaged form (paper, plastic bags), disposable soft containers, and closed railway wagons in bulk. When transported as loose bulk cargo, the transportation units must be covered with a tarpaulin to prevent dust formation.
Accredited inspectors and laboratory technicians from CISS GROUP conduct sodium sulfate inspections at every point in the supply chain.
The main stages of sodium sulfate inspection:
Incoming/outgoing sodium sulfate inspection
This stage occurs during sodium sulfate delivery to silos or ports or when it is released from factory or silo warehouses. CISS GROUP inspectors visually assess the premises for suitability in cargo storage. They check the sodium sulfate to ensure it is dry, uncontaminated, free from pests, foreign matter, weeds, mold, or unusual odors. If transported in bags, inspectors examine them for traces of soaking and, if agreed, perform selected bag openings for sampling and further quality verification.
Cleanliness inspection of containers and vessel holds before loading
A visual inspection of containers and empty holds ensures cleanliness and suitability for sodium sulfate transportation. Inspectors examine internal surfaces, assess the integrity of locks, hinges, and other fasteners on container doors, and inspect rubber seals on container doors and hold covers.
Loading supervision and sampling
During loading, inspectors oversee the process, verify gross and net weight through re-weighing, and perform weight checks for bulk cargo using the draft survey method. They oversee fumigation, conduct visual quality assessments, and collect samples per regulatory sampling procedures. Once loading is complete, containers or holds are sealed, and comprehensive reports are generated with direct client access.
CISS GROUP provides 24/7 loading inspection and sampling services.
Laboratory analysis of sodium sulfate quality
Sodium sulfate quality testing is conducted exclusively in accredited laboratories according to international standards and national methodologies (ISO, CEN, TFI). Key quality parameters include:
- Mass fraction of sodium sulfate
- Mass fraction of water-insoluble residue
- Mass fraction of chlorides (as sodium chloride)
- Mass fraction of calcium sulfate
- Mass fraction of magnesium ions
- Mass fraction of iron
- Mass fraction of water
- Proportion of sodium nitrite and sodium nitrate
- Mass fraction of sodium carbonate
Photo and video documentation
Each inspection stage is documented with photos and videos, including timestamps. Upon completion, CISS GROUP provides a comprehensive photo report covering all aspects of the inspection.
Certificates and documentation
Following sodium sulfate inspection, a final certificate or detailed report is issued. Clients can verify document authenticity using a unique QR code linked to the CISS GROUP website, where digital certificates are securely stored. These certificates feature a digital cryptographic signature, ensuring authenticity and security.
Digitally signed certificates are often required by banks for verifying trade integrity in transactions involving letters of credit.
CISS GROUP ensures transparency, reliability, and compliance in every sodium sulfate inspection, safeguarding the interests of all stakeholders in the global supply chain.
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