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. The sample and two consecutive glasses on the color scale are viewed simultaneously, making it easier to achieve the optimum color match. For rapid color grading within predetermined color limits, the glass standards can be set to the two limiting colors so that it is easy to check that the sample is within tolerance.
Specification of Petroleum Comparator
10 1⁄2 x 9 x 5 1⁄4 (26.7x22.9x13.4)
Net Weight: 3.5 lbs (1.6 kg)