Material Selection
Standardized procedures dictate how to select representative specimens from large consignments of wood pulp for quality and moisture testing. The rules of iso 7213 sampling define the number of bales or rolls that must be extracted to guarantee statistical validity. This methodology prevents disputable results arising from biased selection of material from the outer edges of a shipment.
Extraction Procedure
Technicians must draw specimens from different positions throughout the lot to ensure that the entire batch is represented. When sampling rolls, they must discard the outermost layers to avoid testing material that has interacted with ambient air. For baled pulp, the iso 7213 sampling method requires cutting specific wedge-shaped pieces from a defined depth within the bale.
These steps guarantee that the moisture profile of the samples reflects the average of the whole cargo. This rigorous approach prevents operators from only testing the driest bales.
Trade Settlement
Adhering to this sampling standard protects both mills and buyers from financial loss during cargo disputes. Invoices are routinely adjusted based on the testing of these extracted specimens. If sampling is conducted incorrectly, the resulting moisture and strength measurements will be inaccurate, leading to incorrect payments.
This protocol provides the legal and technical foundation for resolving international quality claims in court.
