KOEHLER Petroleum Colorimeter is a single scale, 3-field petroleum comparator designed for visual color grading by direct comparison between the sample and colored glass filters housed in test discs conforming to the chromaticity coordinates of ASTM D1500. The sample and two consecutive glasses on the color scale are viewed simultaneously, making it easier to achieve the...
KOEHLER Petroleum Colorimeter is a single scale, 3-field petroleum comparator designed for...
