ISO 23497:2019
Determination of pH value — Technical buffer solutions for the calibration of technical measuring installations
Determination of pH value — Technical buffer solutions for the calibration of technical measuring installations
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 7
- Дата публикации:
- 12 июля 2019 г.
- Издание:
- ISO IS 23497 edition 1 version 1
- ICS:
- 87.040
This document specifies requirements for technical buffer solutions. These buffer solutions are preferably used for the calibration and adjustment of technical pH measuring equipment as well as pH measuring installations in laboratories. Measuring methods are given to determine pH values and buffer capacities of such buffer solutions based on pH reference buffer solutions in accordance with ISO 23496. NOTE Annex A gives examples of technical buffer solutions.
Abstract
Overview
ISO 23497:2019 specifies requirements and measurement methods for technical buffer solutions used to calibrate and adjust technical pH measuring equipment and pH measuring installations. The standard defines how to determine pH values and buffer capacity of technical buffers by traceable comparison to reference buffer solutions in accordance with ISO 23496. Annex A provides practical examples of commonly used technical buffer solutions (e.g., glycine, acetate, citric/phosphate, boric acid/NaOH, HCl, NaOH).
Key topics and requirements
- Purpose: Provide higher ionic strength (higher buffer capacity) solutions suitable for industrial and technical pH calibration where reference buffers (low ionic strength) are impractical.
- Traceability: pH values of technical buffers are measured based on ISO 23496 reference buffers and in accordance with DIN 19268 to ensure traceability to primary standards.
- Measurement uncertainty:
- pH
Технические детали
- Технический комитет
- ISO/TC 35/SC 9 - General test methods for paints and varnishes
- SKU
- ISO 23497:2019
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