ASTM D6166 Test Method for Color of Naval Stores and Related Products
ASTM D6166 Standard Test Method for Color of Naval Stores and Related Products (Instrumental Determination of Gardner Color)
3. Summary of Test Method
3.1 The color of a liquid sample is measured using an instrument capable of measuring transmitted color and reporting in Gardner colors or in a color system that can be converted to Gardner colors.
4. Significance and Use
4.1 This test method provides a more precise way of measuring Gardner color than described in Test Method D1544. It is applicable to naval stores products having colors from Gardner 1 to Gardner 18. The Gardner scale is not applicable to materials with colors lighter than 1 or darker than 18.
