ASTM E313 PDF

Historical Version s - view previous versions of standard. Work Item s - proposed revisions of this standard. More E For example, a series of specimens to be compared should have generally similar gloss, texture, and if not opaque thickness, and translucency. For whiteness measurement, this practice is limited to specimens having Munsell value greater than 8.

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Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Learn More. Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.

Validating the specifications, value and safety of your raw materials, products and assets. Formally confirming that your products and services meet all trusted external and internal standards. Scope: Yellowness Index is a number calculated from spectrophotometric data that describes the change in color of a test sample from clear or white to yellow. This test is most commonly used to evaluate color changes in a material caused by real or simulated outdoor exposure.

Test Procedure: Test sample packaging, handling, and preparation preferably no cleaning can affect the test results by modifying the surface of the sample. Since YI testing is often a series of comparative measurements over extended periods of time, these factors should be defined and documented prior to any testing. After specifying the illuminant, observer angle, and the reference color, the test sample is inserted into the specimen holder, and the spectrophotometer takes the reading.

Multiple samples should be measured and the readings averaged. Specimen size: 4" mm disk. Standards can be obtained from appropriate standard authorities. Intertek Global Website. Toggle navigation Intertek. Industries Services. Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.

Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Inspection Validating the specifications, value and safety of your raw materials, products and assets. Certification Formally confirming that your products and services meet all trusted external and internal standards.

Assurance Testing Inspection Certification. Through our network of over 46, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world. Find out more. Global Reach Intertek is the industry leader with over 46, people in 1, locations in over countries. Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world.

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Yellowness Index (YI) ASTM E313

Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Learn More. Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Validating the specifications, value and safety of your raw materials, products and assets. Formally confirming that your products and services meet all trusted external and internal standards. Scope: Yellowness Index is a number calculated from spectrophotometric data that describes the change in color of a test sample from clear or white to yellow. This test is most commonly used to evaluate color changes in a material caused by real or simulated outdoor exposure.

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This document has been replaced. View the most recent version. White textiles, paints, and plastics are a few of the materials that can be described by the indices of yellowness or whiteness calculated by this practice. For near-white specimens, however, it is often useful to calculate single-number scales of yellowness or whiteness. This practice provides recommended equations for such scales and discusses their derivations and uses, and limits to their applicability see also Ref 1 2. No other units of measurement are included in this standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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