The Platinum-Cobalt Scale (Pt/Co scale or Apha-Hazen 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 colour in platinum-cobalt scale. The ASTM has detailed description and procedures in ASTM Designation D1209, "Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)".[1][2][3]
Colour may be reported on a water quality report using this scale.[4]
scale, platinum, cobalt, scale, apha, hazen, scale, color, scale, that, introduced, 1892, chemist, allen, hazen, 1869, 1930, index, developed, evaluate, pollution, levels, waste, water, since, expanded, common, method, comparison, intensity, yellow, tinted, sa. The Platinum Cobalt Scale Pt Co scale or Apha Hazen 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 colour in platinum cobalt scale The ASTM has detailed description and procedures in ASTM Designation D1209 Standard Test Method for Color of Clear Liquids Platinum Cobalt Scale 1 2 3 Colour may be reported on a water quality report using this scale 4 See also editAPHA colorReferences edit HunterLab FAQ How to Measure Color of a Sample amp Use An Index HunterLab PDF www hunterlab com Designation D1209 00 Standard Test Method for Color of Clear Liquids Platinum Cobalt Scale ASTM International West Conshohocken PA 2000 Hazen A The Measurement of the Colors of Natural Waters American Chemist Journal 18 264 1896 Untitled Page waterquality anglianwater com Retrieved 2024 01 24 nbsp This hydrology article is a stub You can help Wikipedia by expanding it vte nbsp This chemistry related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Pt Co scale amp oldid 1198559058, wikipedia, wiki, book, books, library,
