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

Author: Mezilkree Zulugore
Country: Trinidad & Tobago
Language: English (Spanish)
Genre: Education
Published (Last): 4 April 2013
Pages: 379
PDF File Size: 18.64 Mb
ePub File Size: 18.94 Mb
ISBN: 141-5-29815-415-5
Downloads: 53015
Price: Free* [*Free Regsitration Required]
Uploader: Dugul

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.

Color measurements can be useful for comparing resins in pellet form when all samples are similar in shape and size. This variation in pellet appearance, due to varying levels of crystallinity, does not affect final properties.

Standard – Standard Test Method for Color Determination of Plastic Pellets ASTM D –

This variation in the cooling of the pellets can result in different levels of crystallinity in d6920 pellets only. More crystalline nylons will be more opaque than amorphous nylons. Link to Active This link will always route to the current Active version of the standard. This test method should not be used for general material specifications.

  HEWAN TRANSGENIK PDF

The pellet shape is independent of the crystallinity of the material. Some materials, such as polyamide nyloncan be cooled very differently during the production of the pellets.

Color Analysis ASTM D E E

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 in this test method. Referenced Documents purchase aetm The documents listed below are referenced within the subject standard but are not provided as part of the standard.

If there are no material specifications, then default conditions apply. It is possible that each material will have unique characteristics that determine the color values.

Historical Version s – view previous versions of standard. The test method shall be used only to compare specimens of similar pellet shape, size, texture, and degree of translucency.

Standard Test Method for Color Determination of Plastic Pellets

This will result in differences in pellet opacity. The values given in parentheses are for information only. For example, compare translucent disc-shaped pellets to translucent disc-shaped pellets, ast with opaque, rectangular shaped pellets. The measurement is made on pellets and based on tristimulus values obtained with a spectrophotometer or colorimeter.