Scope Certificates against Transaction Certificates in a GOTS Order
A Scope Certificate proves facility qualification, but only a Transaction Certificate verifies the organic status of a specific textile shipment lot.
Net Fiber Weight
Dry Mass
Commercial evaluation of raw fiber consignments depends on determining the actual mass of clean, dry textile material present without any non-fiber components. This measured value is the net fiber weight, which excludes moisture, packaging materials, and natural grease or dirt. Obtaining this figure is essential for establishing a fair basis for transaction and processing calculations, and it forms the foundation of all yield calculations in subsequent yarn spinning stages.
It ensures that buyers only pay for the actual usable textile substance, thereby stabilizing cost projections across various product lines.
Moisture Correlation
Textile fibers absorb moisture from the surrounding atmosphere, which can significantly alter their total weight. To calculate the net fiber weight, samples are dried in a specialized oven until they reach a constant mass, and then a standard moisture regain percentage is added back. This standardized approach eliminates the influence of regional humidity variations on shipment weights.
It allows for direct comparisons between materials sourced from different geographical regions.
Impurity Extraction
Natural fibers like wool and cotton carry substantial amounts of non-fibrous matter such as grease, suint, seed coats, and soil. Before determining the net fiber weight, these contaminants must be removed through solvent extraction or laboratory-scale scouring. This extraction process reveals the true yield of the raw material.
It prevents processed batches from falling short of required output weights.
Commercial Settlement
Invoicing in international fiber trade is almost exclusively based on this corrected weight to prevent financial disputes. If a delivery of raw cotton is found to have excess moisture, the billing weight is adjusted downward to reflect the true net fiber weight. This strict standard maintains trust between spinning mills and global commodity merchants.