ISO 4907-2:2023 PDF
Plastics — Ion exchange resin — Part 2: Determination of water content of anion exchange resins in hydroxide form by centrifugation
Plastics — Ion exchange resin — Part 2: Determination of water content of anion exchange resins in hydroxide form by centrifugation
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 8
- Дата публикации:
- 18 апреля 2023 г.
- Издание:
- ISO IS 4907 edition 1 version 1
- ICS:
- 83.080.01
This document specifies test methods by centrifugation of water content of styrene anion exchange resins in hydroxide form.
Abstract
Overview
ISO 4907-2:2023 specifies a laboratory for the determination of water content in . The standard addresses the challenge that hydroxide-form anion resins have poor thermal stability, and therefore provides a procedure that removes external water by centrifugation, converts ionic form chemically, and measures equilibrium water content without direct high‑temperature drying of the original hydroxide form.
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