Pt/Co scale
id:
pt-co-scale-300-705558
title:
Pt/Co scale
text:
The Platinum-Cobalt Scale is a color scale that was introduced in 1892 by chemist Allen Hazen (1869–1930). The index was developed as a way to evaluate pollution levels in waste water. It has since expanded to a common method of comparison of the intensity of yellow-tinted samples. It is specific to the color yellow and is based on dilutions of a 500 ppm platinum cobalt solution. The colour produced by one milligram of platinum cobalt dissolved in one liter of water is fixed as one unit of colou
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Pt/Co_scale
date created:
date modified:
2024-01-24T12:19:29Z
main entity:
{"identifier":"Q906261","url":"https://www.wikidata.org/entity/Q906261"}
image:
fields total:
13
integrity:
13