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- APHA_color abstract "APHA color, also referred to as the Hazen scale, and more appropriately as the Platinum Cobalt(Pt/Co) scale, is a color standard named for the American Public Health Association and defined by ASTM D1209. It was originally intended to describe the color of waste water, but its usage has expanded to include other industrial applications. APHA color is a color scale sometimes referred to as a “yellowness index” that is used to assess the quality of liquids that are clear to yellowish in color.It is similar to the Hazen color test, to which it is sometimes incorrectly referred. The Hazen color test uses a Pt/Co solution and was developed for water treatment facilities where the Color of water could be used as a measure of concentration of dissolved and particulate material. Slight discoloration is measured in Hazen units (HU) Impurities can be deeply colored as well, for instance dissolved organic compounds called tannins can result in dark brown colors.".
- APHA_color wikiPageExternalLink D1209.htm.
- APHA_color wikiPageExternalLink an-1001-measuring-the-water-whiteness-of-liquids-using-the-apha-scale.pdf.
- APHA_color wikiPageExternalLink apha-pt-co-hazen-color.
- APHA_color wikiPageExternalLink pt-co_apha.html.
- APHA_color wikiPageExternalLink apha2.
- APHA_color wikiPageExternalLink page42.html.
- APHA_color wikiPageExternalLink aphahazen.cfm.
- APHA_color wikiPageExternalLink an11_96br3.pdf.
- APHA_color wikiPageExternalLink index.php?id=14778.
- APHA_color wikiPageExternalLink apha-color-scale.
- APHA_color wikiPageID "17543579".
- APHA_color wikiPageLength "3971".
- APHA_color wikiPageOutDegree "12".
- APHA_color wikiPageRevisionID "682308966".
- APHA_color wikiPageWikiLink ASTM_International.
- APHA_color wikiPageWikiLink Allen_Hazen.
- APHA_color wikiPageWikiLink American_Public_Health_Association.
- APHA_color wikiPageWikiLink Blackwater_river.
- APHA_color wikiPageWikiLink Category:Color.
- APHA_color wikiPageWikiLink Category:Standards.
- APHA_color wikiPageWikiLink Color_of_water.
- APHA_color wikiPageWikiLink Organic_compound.
- APHA_color wikiPageWikiLink Co_scale.
- APHA_color wikiPageWikiLink Wastewater.
- APHA_color wikiPageWikiLinkText "APHA color".
- APHA_color wikiPageUsesTemplate Template:Reflist.
- APHA_color subject Category:Color.
- APHA_color subject Category:Standards.
- APHA_color type Technique.
- APHA_color comment "APHA color, also referred to as the Hazen scale, and more appropriately as the Platinum Cobalt(Pt/Co) scale, is a color standard named for the American Public Health Association and defined by ASTM D1209. It was originally intended to describe the color of waste water, but its usage has expanded to include other industrial applications.".
- APHA_color label "APHA color".
- APHA_color sameAs Q4653301.
- APHA_color sameAs m.04634dx.
- APHA_color sameAs Q4653301.
- APHA_color wasDerivedFrom APHA_color?oldid=682308966.
- APHA_color isPrimaryTopicOf APHA_color.