ISO 6271 Clear liquids - Estimation of colour by the platinum-cobalt colour scale - Third Edition
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International Organization for Standardization
Clear liquids - Estimation of colour by the platinum-cobalt colour scale - Third Edition
N 6271
Annotation
This International Standard specifies a spectrophotometric method for estimating the colour of clear liquids in terms of platinum-cobalt units (Pt-Co units). It is applicable to clear liquids having a colour characteristic similar to those of the platinum-cobalt colour scale specified in Annex A. For products with colours more intense than the Pt-Co stock solution the method specified in ISO 4630 applies.
The spectrophotometric method provides a more precise way of measuring Pt-Co colour than a visual sample comparison by human eyes.
NOTE The term "Pt-Co colour" used here is preferred over the terms "Hazen colour" and "APHA colour".
Автоматический перевод:
Прозрачные жидкости - Оценка цвета цветовой шкалой платинового кобальта - Третий Выпуск
Этот Международный стандарт указывает спектрофотометрический метод для оценки цвета прозрачных жидкостей с точки зрения модулей платинового кобальта модули (-Ко Co). Это применимо для очистки жидкостей, имеющих цветовую характеристику, подобную тем из цветовой шкалы платинового кобальта, указанной в приложении A. Для продуктов с цветами, более интенсивными, чем исходный раствор зэ-Ко Co применяется метод, указанный в ISO 4630.



