GB/T 39691-2020
ActivePlastics—Determination of refractive index
塑料 折光率的测定
Application Summary AI generated
GB/T 39691-2020 specifies the test method for determining the refractive index of solid and liquid plastics using a refractometer. It is applied in quality control and material characterization within the plastics manufacturing industry, particularly for transparent or translucent polymer products like optical lenses, films, and sheets. This standard ensures consistent optical property measurement for product specification compliance and research development.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.