Platinum Cobalt Units

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.

Platinum cobalt units.

The name preferred in astm d1209 and iso 6271 is the platinum cobalt color or pt co but apha is name in most common use in industry. An apha platinum cobalt color analyzer system to automate the measurement within a process eliminates the visual judgment of a technician and delivers online real time process control information to the process operators. It has since expanded to a common method of comparison of the intensity of yellow tinted samples. For determining color in water tests an unlimited number of reagents the color of water is measured by comparing the water to platinum cobalt color standards representing apha standard color units.

When used the term hazen units hu may be found in product specifications. Several expressions for defining water white gradually appeared and it became evident that a more precise color standard was needed. 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. The index was developed as a way to evaluate pollution levels in waste water.

This was accomplished in 1952 with the adoption of test method d1209 using the platinum cobalt scale. Platinum cobalt color reference solution hazen 500 according to din en iso 7887 and astm d1209 pt 500 mg l certipur. 3 2 for a number of years the term water white was considered sufficient as a measurement of solvent color. Kemtrak stainless steel npt 1 tapered pipe thread measurement cell with sapphire measurement window.

Shop a large selection of water quality testing supplies products and learn more about platinum cobalt color standard solution apha fisher chemical testing glass bottle. Kemtrak dcp007 photometer system complete with stainless steel long pass opl 200mm measurement cell. 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 apha platinum cobalt color scale is described in astm d1209 standard testmethod for color of clear liquids platinum cobalt scale.

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