This standard is issued under the fixed designation D ; the number 1 This test method is under the jurisdiction of ASTM Committee D20 on Plastics. Buy ASTM D TEST METHOD FOR COLOR DETERMINATION OF PLASTIC PELLETS from SAI Global. Color Analysis Hunter Lab CIE Lab ASTM D ASTM E ASTM E
Standard Test Method for Color Determination of Plastic Pellets
The measurement is made on pellets and based on tristimulus values obtained with a spectrophotometer or colorimeter. The test method shall be used only to compare specimens of similar pellet shape, size, texture, and degree of translucency.
Some materials, such as polyamide nyloncan be cooled very differently during the production of the pellets. The values given in parentheses are for information only. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
The pellet shape is independent of the crystallinity of the material. 6d290
Work Item s – proposed revisions of this standard. Any test specimen preparation, conditioning, dimensions, or testing parameters, or a combination thereof, covered in the materials specification shall take precedence over those mentioned c6290 this test method.
For example, compare translucent disc-shaped pellets to translucent disc-shaped pellets, not with opaque, rectangular shaped pellets. Link to Active This link will always route to the current Active version of the standard.
Color measurements can sstm useful for comparing resins in pellet form when all samples are similar in shape and size.
If there are no material specifications, then default conditions apply. More crystalline nylons will be more opaque than amorphous nylons.
ASTM D – 05 Standard Test Method for Color Determination of Plastic Pellets
It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. This will result in differences in pellet opacity. Historical Version s – view previous versions of standard. This variation in pellet appearance, due to varying levels of crystallinity, does not affect final properties. It is possible that each material will have unique characteristics that determine the color values.