ASTM D1925 Standard Test Method for the Yellowness Index of Plastics

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ASTM D1925 testing. This test method is mainly intended to determine the degree of yellowness (or change in degree of yellowness) of homogeneous, non-fluorescent, almost colorless transparent materials under daylight illumination.

It can be applied to the transmittance of transparent and translucent plastics and the reflection of opaque plastics. It is based on tristimulus values ​​calculated from data obtained on a Hardy-GE type spectrophotometer, but other apparatus are satisfactory if equivalent results are obtained.

Values ​​stated in SI units should be accepted as standard.

This test method is not shown for determining the transmitted yellowness of plastics with a light transmittance below 25% and is not shown for determining the reflected yellowness of translucent plastics.

This standard may include hazardous materials, processes and equipment. This standard does not purport to address all safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices prior to use and to determine the applicability of regulatory restrictions.

EUROLAB assists manufacturers with ASTM D1925 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.