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ASTM

C1649-14(2021)

Standard Practice for Instrumental Transmittance Measurement of Color for Flat Glass, Coated and Uncoated

2021

3

ASTM Vol.15.02 (2022)

Color measurement quantifies the transmitted color for glass. The user defines an acceptable range of color appropriate for the end use. A typical quality concern for transmittance color measurement of glass products is verification of lot-to-lot color consistency for end-user acceptance.

If the transmitted color of a glass product is consistent from lot-to-lot and within agreed supplier-buyer acceptance criteria, the product’s color is expected to be consistent and acceptable for end-use.