ISO 17190 discusses polyacrylate superabsorbent powders for urine-absorbing aids for incontinence. ISO 17198 outlines a test method for measuring the permeability-dependent absorption under pressure (PDAUP) of polyacrylate superabsorbent powder, where permeability is a significant controlling factor under the conditions of the test.
In the given test method, uniform pressure is applied to the test portion. The cylinder is then placed on a filter plate, that is placed in a Petri dish filled with saline solution. After an absorption time of 1 hour, the cylinder is removed from the filter plate and weighed to determine the amount of fluid absorbed.
ISO 17190-8 on of PDAUP saline solution for polyacrylate superabsorbent powders is useful for:
Polyacrylate superabsorbent powders absorb water or urine by a process called osmosis. When the polymer is placed in urine, there is a tendency for the atoms contained in the powder to distribute equally between the network and water. It is important to know the PDAUP of polyacrylate superabsorbent powder for further operations.
ISO 17190-8 guidelines provide requirements for Water, Sodium hydroxide solution, Hydrochloric acid solution, Sodium chloride solution, Standard buffer solutions, sampling, procedure, calculations, reports, precision for the PDAUP of saline solution in polyacrylate powder. This helps in conducting proper assessment and provides reliable results for the PDAUP of saline solution distribution in polyacrylate superabsorbent powder that can be reproduced in any laboratory.
BS ISO 17190-8:2020 supersedes ISO 17190-8:2020, which has been withdrawn. BS ISO 17190-8:2020 has some technical changes with respect to ISO 17190-8:2020. These include:
ISO 17190-8