The ISO 1 2625-8: 2010 standard defines a basket immersion test method for determining the water absorption time and water absorption capacity of tissue and tissue paper. The testing process involves immersing the paper sample in water, recording the time required for the paper to be fully wetting by manual equipment, and measuring the water absorption per unit mass. The standard applies to the assessment of paper water-absorption energy and is a key parameter for measuring the mass of tissue paper products. The standard pays particular attention to the accuracy of the manual method, but also allows the use of automated test equipment provided that the automated method is verified to be consistent with the results of the manual method.
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