ISO 21501-4:2018/Amd 1:2023
Determination of particle size distribution — Single particle light interaction methods — Part 4: Light scattering airborne particle counter for clean spaces — Amendment 1
Determination of particle size distribution — Single particle light interaction methods — Part 4: Light scattering airborne particle counter for clean spaces — Amendment 1
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 10
- Дата публикации:
- 1 февраля 2023 г.
- Издание:
- ISO IS 21501 edition 2 version 1
- ICS:
- 19.120
Abstract
Overview
ISO 21501-4:2018/Amd 1:2023 is an amendment to the international standard for determining particle size distribution by single particle light interaction methods. Specifically, it focuses on light scattering airborne particle counters (LSAPC) designed for clean spaces such as controlled environments and cleanrooms. This amendment refines methodologies related to evaluating counting efficiency and introduces additional testing methods to improve accuracy and traceability in measuring airborne particle size and concentration.
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