What is ISO 17190-9 about?
ISO 17190 discusses polyacrylate superabsorbent powders for urine-absorbing aids for incontinence. ISO 17190-9 outlines a test method to determine the mass flow rate and bulk density (or apparent density) of polyacrylate superabsorbent powders.
The flowability of polyacrylate superabsorbent powders is determined by pouring a representative sample through a specified funnel and recording the time required for the entire sample to flow out of the funnel. The mass of the sample is divided by the time recorded to calculate the flow rate.
Who is ISO 17190-9 for?
ISO 17190-9 on flow rate and bulk density for Polyacrylate powders is useful for:
- Manufacturers of polyacrylate superabsorbent powders
- Test centers for polyacrylate superabsorbent powders
- Regulatory authorities
Why should you use ISO 17190-9?
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. Bulk density is used in determining the amount of powder that can fit in a space such as a blender or a hopper on a tablet press or capsule filler. Flow rate explains the flowability of Polyacrylate superabsorbent powders.
ISO 17190-9 guidelines provide requirements for Water, Sodium hydroxide solution, Hydrochloric acid solution, Sodium chloride solution, Standard buffer solutions, sampling, procedure, calculations, reports, precision for the determination of flow rate and bulk density in polyacrylate powder. This helps in conducting proper assessment and provides reliable results for the determination of flow rate and bulk density in polyacrylate superabsorbent powder that can be reproduced in any laboratory.
What’s changed since the last update?
BS ISO 17190-9:2020 supersedes ISO 17190-9:2020, which has been withdrawn. BS ISO 17190-9:2020 has some technical changes with respect to ISO 17190-9:2020.
These include:
- Full-text review and new laboratory analysis with statistical evaluation
- Request for duplication removed