What is ISO 17190-7 about?
ISO 17190 discusses polyacrylate superabsorbent powders for urine-absorbing aids for incontinence. ISO 17190-7 provides a test method that determines the capacity of polyacrylate superabsorbent powders to absorb saline solution under a specified enclosing pressure.
In the given test method, uniform pressure is applied to the test portion. The cylinder is then placed on a filter plate, which 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.
Who is ISO 17190-7 for?
ISO 17190-7 on the gravimetric determination of absorption against pressure for Polyacrylate superabsorbent powders is useful for:
- Manufacturers of polyacrylate superabsorbent powders
- Test centers for polyacrylate superabsorbent powders
- Regulatory authorities
Why should you use ISO 17190-7?
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 capacity of polyacrylate superabsorbent powders to absorb saline solution under a specified enclosing pressure.
ISO 17190-7 guidelines provide requirements for Water, Sodium hydroxide solution, Hydrochloric acid solution, Sodium chloride solution, Standard buffer solutions, sampling, procedure, calculations, reports, precision for the gravimetric determination of absorption against pressure for Polyacrylate superabsorbent powders. This helps in conducting proper assessment and provides reliable results for the gravimetric determination of absorption against pressure for Polyacrylate superabsorbent powders that can be reproduced in any laboratory.
What’s changed since the last update?
BS ISO 17190-7:2020 supersedes ISO 17190-7:2020, which has been withdrawn. BS ISO 17190-7:2020 has some technical changes with respect to ISO 17190-7:2020. These include:
- Full-text review and new laboratory analysis with statistical evaluation
- Descriptions of the equipment required, and the handling procedure improved