ASTM E313 -Standard Testing Instruments

ASTM E313 specifies the standard practice used for calculating yellowness index and whiteness index from instrumentally measured color coordinates. The standard helps manufacturers study color appearance, yellow tint formation, whiteness level, and optical characteristics of plastics, paper, textiles, coatings, and packaging materials under controlled laboratory conditions. It is widely used in polymer, packaging, printing, textile, and consumer goods industries for color quality inspection and product consistency evaluation. ASTM International Presto Laboratories offers advanced spectrophotometer and color measurement systems suitable for ASTM E313 testing applications. These testing systems help industries examine color variation, whiteness values, and yellowness characteristics for laboratory analysis and quality control requirements.