BS ISO 17190-8-2020 PDF

Full title and description

Urine-absorbing aids for incontinence — Polyacrylate superabsorbent powders — Part 8: Test method for determination of the permeability dependent absorption under pressure of saline solution by gravimetric measurement. This international standard specifies a laboratory gravimetric procedure to measure the permeability-dependent absorption under pressure (PDAUP) of polyacrylate superabsorbent powders used in urine-absorbing aids for incontinence.

Abstract

This document defines the apparatus, reagents, conditioning, sampling and step-by-step gravimetric procedure to determine how permeability of the swollen gel layer controls saline uptake under a defined pressure. The method is intended for comparative assessment, quality control and R&D of superabsorbent polymer (SAP) performance under constrained conditions representative of in-use loading.

General information

• Status: Published / Current
• Publication date: October 2020 (released in late October 2020)
• Publisher: ISO (International Organization for Standardization)
• ICS / categories: 11.180.20 (Aids for incontinence and ostomy)
• Edition / version: Second edition (2020)
• Number of pages: 10

Key bibliographic and publication details above are taken from the ISO publication metadata and national standards catalogues.

Scope

The standard provides a laboratory test method for measuring the permeability-dependent absorption under pressure (PDAUP) of polyacrylate superabsorbent powders where permeability is a significant controlling factor under the test conditions. It covers required reagents (0.9 % sodium chloride), apparatus (cylinder with filtered base, ceramic filter plate, piston/weight, balances), sample conditioning and the 60-minute gravimetric absorption procedure together with calculation, reporting and precision information.

Key topics and requirements

• Principle: gravimetric determination of saline uptake under defined pressure to assess permeability-controlled absorption.
• Reagents and test fluid: use 0.9 % NaCl prepared with analytical-grade water (reference to ISO 3696 for water quality).
• Apparatus: standardized cylinder, mesh/filter base, ceramic filter plate (porosity specification), piston and calibrated weight to apply specified pressure, analytical balance and trays to minimize evaporation.
• Conditioning: laboratory atmosphere conditioning (typical reference (23 ± 2) °C and (45 ± 15) % RH) following ISO 187 guidance.
• Procedure essentials: sample preparation and even bed formation, controlled application of pressure, regular maintenance of saline level, 60-minute absorption interval, careful removal and gravimetric calculation of absorbed mass, and reporting of PDAUP with precision statements.
• Safety and handling: notes on dust control and precautions for handling powdered SAPs; recommendations to reduce inhalable dust exposure during sample handling.

Typical use and users

Manufacturers of incontinence products, polymer and SAP producers, quality-control and testing laboratories, product R&D teams, materials engineers and procurement or regulatory specialists use this test for batch acceptance, supplier qualification, formulation comparison and design verification where permeability under load affects real-world performance.

Related standards

ISO 17190-8:2020 is part of the ISO 17190 series on polyacrylate superabsorbent powders and references other standards used for conditioning and reagents such as ISO 187 (standard atmosphere for conditioning) and ISO 3696 (water for analytical use). It replaces the earlier ISO 17190-8:2001. Related test methods for SAPs and absorbency under pressure are found in other parts of the ISO 17190 series.

Keywords

absorbent, superabsorbent polymer, SAP, polyacrylate, PDAUP, permeability-dependent absorption, absorbency under pressure, incontinence aids, gravimetric measurement, ISO 17190

FAQ

Q: What is this standard?

A: ISO 17190-8:2020 is an international test method that specifies a gravimetric procedure to measure the permeability-dependent absorption under pressure of polyacrylate superabsorbent powders used in urine-absorbing aids for incontinence.

Q: What does it cover?

A: It covers apparatus, reagents (0.9 % NaCl), conditioning, sampling, the stepwise test procedure (including a defined pressure and typical 60-minute absorption time), calculations, reporting requirements and precision information for PDAUP measurements.

Q: Who typically uses it?

A: SAP and absorbent product manufacturers, independent test and quality laboratories, R&D teams, materials scientists and procurement/regulatory professionals who need standardized, comparable performance data for SAP materials used in incontinence products.

Q: Is it current or superseded?

A: This is the second edition published in 2020 and supersedes ISO 17190-8:2001; it is the current published version of Part 8 as of its 2020 release.

Q: Is it part of a series?

A: Yes. ISO 17190 is a multipart series dealing with polyacrylate superabsorbent powders for urine-absorbing aids; Part 8 is the PDAUP gravimetric test method and other parts of the series cover complementary test methods and material characterizations.

Q: What are the key keywords?

A: Polyacrylate, superabsorbent powder, SAP, absorbency under pressure, permeability-dependent absorption (PDAUP), gravimetric test, incontinence aids, ISO 17190.