The instrument is suitable to determine color of various lubricating oils and other petroleum products as per industrial standard of China SH/T 0168-92 and ASTM D1500 Standard Test Method for Color of Petroleum Products. The test methods are as follows: Fill test sample into color comparing tube and compare sample color with standard color to ascertain its color number. Please see the attached color number comparing sheet to find out the similarity between color number of the instrument and color number in standard GB/T6540.

II. Main technical specifications

1. Chroma:

Standard color from 1 to 25, glass sheet.

2. Standard light source:

The light source is 220V, 100W, and the inner frosted milk bulb with a temperature (color temperature) of 2750 ± 50K is the standard light source.