ASTM D6290 PDF
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
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Standard – Standard Test Method for Color Determination of Plastic Pellets ASTM D –
This test method should not be used for general material specifications. Color measurements can be useful for comparing resins in pellet form when all samples are similar in shape and size. Link to Active This link will always route to the current Active version of the standard.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The measurement is made on pellets and based on tristimulus values obtained with a spectrophotometer or colorimeter. If there are no material specifications, then default conditions apply.
The pellet shape is independent of the crystallinity of the material. The test method shall be used only to compare specimens of similar pellet shape, size, texture, and degree of translucency.
Historical Version s – view previous versions of standard. Work Item s – proposed revisions of this standard. It is possible that each material will have unique characteristics that determine the color values.
It is the responsibility of the aztm of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
The values given in parentheses are for information only.
Standard Test Method for Color Determination of Plastic Pellets
For example, compare translucent disc-shaped pellets to translucent disc-shaped pellets, not with opaque, rectangular shaped pellets. Any test specimen preparation, conditioning, dimensions, or testing parameters, or a combination thereof, covered in the materials specification shall take precedence over those mentioned in this test method.
Some materials, such as polyamide nyloncan be cooled very differently during the production of the pellets. This will result in differences in pellet opacity.
This variation in the cooling of the pellets can result in different levels of crystallinity in the pellets only. More crystalline nylons will be more opaque than amorphous nylons. This variation in pellet appearance, due to varying levels of crystallinity, does not affect final properties.