Laboratory Method
Standardized testing protocol defines the preparation and analysis of fiber cross sections to determine their fineness. Applying optical microtomy ISO 2370 allows laboratory technicians to obtain precise measurements of the diameter of flax fibers under a light microscope. This international standard governs the sampling method, the embedding medium, and the mathematical formulas used to calculate the average fiber area.
Sample Preparation
Sample preparation requires embedding the fiber bundles in a rigid resin before slicing thin sections with a microtome blade. Under optical microtomy ISO 2370, these sections must be cut to a thickness that prevents light distortion while maintaining the integrity of the cell walls. The technician then projects the cross-sectional images onto a digital grid to measure the individual fibers and compile the statistics required for the final test report.
Any deviation from the specified cut angle or resin hardness can introduce distortion that skews the fiber diameter measurements and leading to incorrect classification of the flax shipment’s quality grade.
Quality Standard
Textile buyers use these microphotographs to confirm compliance with contract specifications. The standardized results from optical microtomy ISO 2370 minimize disputes between raw material suppliers and yarn spinning mills by providing a common metric.
