Isotopic Verification Thresholds for Blended European and Asian Long Staple Flax Fibre
Stable isotope analysis of isolated alpha-cellulose resolves European and Asian long staple flax blends down to ten percent with high statistical confidence.
Sample Core Extraction
Harvesting Method
Physical removal of representative material from compressed packages allows laboratories to assess the quality of raw agricultural fibres. Technicians use sample core extraction to retrieve flax fibres from the center of high-density bales without opening or damaging the packaging. A hollow, rotating tube with a serrated edge penetrates deep into the compressed bale to draw out a cylinder of clean fibre.
This process provides an unbiased specimen that represents the moisture content and cleanliness of the entire batch. The resulting specimen is immediately sealed in an airtight container to prevent any change in weight due to environmental humidity.
Fiber Analysis
Laboratory evaluation of the extracted core determines the spinning potential and commercial value of the incoming flax shipment. The retrieved sample core extraction results are used to measure the average length, strength and non-fibrous trash content of the batch. This analysis protects the spinning mill from buying raw material that cannot meet the requirements for fine yarn production.
Standard Practice
Certified testers follow international protocols to determine the number of cores required per shipment to ensure statistical validity. If the moisture test deviates from the contract standard, the price of the shipment is adjusted based on the dry weight of the core. This standardized testing method ensures fair trade between global flax growers and the spinning mills.