#Color me blue apha iso
The scaling starts with -16 Saybolt (darkly) to +30 saybolt (light) whereby the color is derived by the column height of the sample in visual comparison with three standardized glass standards.ĪSTM D 1544, ASTM D 6166, DIN EN ISO 4630-1, MS 817 Part 10 used for the measurement of light dyed petro chemical products lower than a color of 0,6 ASTM (according ASTM D 1500) like aviation fuel, kerosene, etc.
The graduation of the standard glasses is 0,5 ASTM and starts with 0.5 ASTM for the brightest colour and ends with 8.0 ASTM for the darkest colour.The ASTM D 1500 standard is typically used as quality parameter for products such as lubricating oil, fuel oil, diesel or paraffin. The ASTM D 1500 color is used for petro chemical products and will be specified by using 16 glass standards with defined transmission and chromatic. International Organization for Standardization: ISO homepageĪSTM D 1500, ASTM D 6045, ISO 2049, IP196 Malaysian Standards for test of palm oils: MS / Homepage: Malaysian palm oil board) the Institut OF petrolium (IP) or the Malaysian Standards for test of palm oils (MS) have published comparable specifications.Īmerican Society for Testing and Materials ASTM homepage Color scales such as Gardener-, Saybolt-, or Rosin are as well fixed in the ASTM standards. There were more than 12,000 ASTM standards publiched until the year 2005. It publishes technical standards for goods and services.ĪSTM was founded 1898 by a group by scientists and engineers under the direction of Charles Benjamin Dudley. Safety instructions Pt/Co- calibration liquid (German language)ĪSTM International (ASTM – American Society for Testing and Materials) is an international standardisation organization with headquarter in the USA. Please take notice to the safety instructions before handling the APHA calibration liquid. Please make sure, these work has to be done in laboratories by qualified persons only, considering the safety requirements. Dilute by using distilled water until you reach a total volumina of 1 litre. Production of a calibration standard with 500 mg/l Pt/Co (500 Hazen)ĭissolve 1.245 g potassium hexachloroplatinate and 1.000 g cobalt (II) - chloride hexahydrate in 100 ml high concentrated chemically pure hydrochloric acid (d=1.19) (warm up if necessary). The calibration liquid will loose/change its colour during this reaction. The Pt/Co calibration liquid can cause a chemical reaction with the nickel of a stainless steel flowcell during the calibration procedure of an inline- photometer.
Wavelength 510nm / optical path length 10mm Wavelength 480nm / optical path length 10mm Wavelength 455nm / optical path length 10mm Wavelength 430nm / optical path length 10mm Spectral absorption measurement (extinction), calibration standard with 500 mg/l Pt/Co 500 (500 Hazen) ISO (International Organization for Standardization) homepage The specifications in the standard ISO 2211 was still to imprecisely to fit the requirements of many industrial applications and and became therefore replaced 1981 by the more precise DIN ISO 6271.ĪPHA (American Public Health Association) homepageĭIN (deutsches Institut für Normung) homepage The standard ISO 2211 was published in the year 1973 (measurement of the color in Hazen units according to the platinum cobalt scale) and replaced the outdated DIN 53409 from the year 1967. The third name "Hazen color" is as well very common, since the color values are typically measured in Hazen units and/or in mg/l Pt. Today the Platinum/cobalt color also named APHA color is one of the mostcommon standards for the color measurement of liquids. The method is based on the optical comparison of the liquid with a platinum cobalt reference solution. The American Public Health Association (APHA) published several testing methods for water, waste water and chemistry, so among to other things as well a procedure to measure yellow hues in liquids. This page contains some informations regarding the most common colour standards. Several different standards are published to guarantee the comparability of the measured values and to fit the requirements of the different applications. The photometric colorimetry is like the turbidimetry an important parameter for the assessment of quality of liquids. And Information regarding photometric Color measurement
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