ISO 17190-10:2020 PDF

Name: ISO 17190-10:2020 — Urine-absorbing aids for incontinence — Polyacrylate superabsorbent powders — Part 10: Test method for determination of extractable polymer content by potentiometric titration
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Urine-absorbing aids for incontinence — Polyacrylate superabsorbent powders — Part 10: Test method for determination of extractable polymer content by potentiometric titration

Название (английский):

ISO 17190-10:2020

Urine-absorbing aids for incontinence — Polyacrylate superabsorbent powders — Part 10: Test method for determination of extractable polymer content by potentiometric titration

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 8
Дата публикации:: 27 октября 2020 г.
Издание:: ISO IS 17190 edition 2 version 1
ICS:: 11.180.20

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Описание (английский):

This document provides a test method to determine the mass fraction of soluble polymers present in crosslinked polyacrylate superabsorbent powders that can be extracted into saline solution.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 17190-10:2020 specifies a laboratory test method for determining the mass fraction of soluble (extractable) polymers present in crosslinked polyacrylate superabsorbent powders used in urine‑absorbing aids for incontinence. The method quantifies polymeric acid and carboxylate species that extract into a 0.9 % saline solution, using potentiometric titration and defined sample preparation, conditioning and calculation procedures.

Key topics and technical requirements

Scope: Measurement of extractable polymer content (soluble acid and salt groups of monomeric, oligomeric and polymeric carboxylates) from superabsorbent powders.

Principle: Mix ~1 g sample with 200 ml 0.9 % saline, stir (250 ± 50 rpm) for 1 hour, allow gel to settle, filter (pore size < 12 µm), then titrate an aliquot potentiometrically.

Titration procedure:

Titrate filtrate to pH 10.0 with standardized NaOH (0.10 mol·L−1) to determine free carboxylic acid groups.
Back‑titrate to pH 2.7 with standardized HCl (0.10 mol·L−1) to determine neutralized carboxylate groups.
Use blank titrations for correction.

Apparatus & reagents: calibrated analytical balances, pH meter with suitable electrode (range pH 2.7–10.0), burette or automated titrator, 0.9 % NaCl solution (conductivity check), grade 3 water (ISO 3696).

Sampling & conditioning: Samples conditioned at laboratory atmosphere (preferred 23 ± 2 °C, 45 ± 15 % RH per ISO 187); rotate containers to homogenize and avoid large lumps (>1 mm).

Calculation & reporting: Convert titration volumes to moles of COOH/COO−, calculate corresponding masses and report extractables as a mass fraction. Precision and reporting requirements are defined in the standard.

Safety note: Minimize inhalation of respirable dust; guidance referenced for exposure limits (e.g., 0.05 mg·m−3 for respirable particles).

Applications

Quality control of superabsorbent polymer (SAP) raw materials and finished incontinence products.

Supplier qualification and incoming inspection to verify soluble polymer levels that can affect absorption, gel integrity and product safety.

R&D and formulation work to compare polymer crosslinking and post‑treatment effects on extractables.

Regulatory and certification testing where trace soluble polymer content impacts product claims or biocompatibility.

Related standards

ISO 17190 series (other parts covering test methods for urine‑absorbing aids)

Normative references used in the method: ISO 187 (conditioning) and ISO 3696 (water for analytical use)

Keywords: ISO 17190-10:2020, polyacrylate superabsorbent powders, extractable polymer content, potentiometric titration, urine-absorbing aids, incontinence, test method, quality control.

ISO 17190-10:2020 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications

Who uses this standard

Related standards

Технические детали

SIST EN ISO 3696:1998

Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)

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BS ISO 17190-4:2020

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