• 0 – 8 ASTM D 1500 Color Scale
• Manufacturing quality and control
• Real time continuous measurement
• Zero maintenance
• High temperature operation – up to 275°C / 527°F
• For use in zone 1 hazardous areas (EExD)

The ASTM D 1500 color scale is applicable to a wide range of petroleum products, such as lubricating oils, heating oils, diesel fuel oils and petroleum waxes. The ASTM D 1500 color scale is the principal quality measurement used for the purchase and sale of partially refined oils.

As an oil is refined, there exists a correlation between the color of the distillate and the degree of refinement. During the refining process, crude oil is transformed into a range of products with distinct colors ranging from the dark red-black of crude through to the pale yellow hue of the lighter fractions. The distinct petroleum colors can be accurately measured and the refinement process controlled using the ASTM D 1500 color scale.

The ASTM D 1500 color scale is also used for product and interface detection, and for product contamination monitoring.