1.1 This test method describes an apparatus and procedure that is suitable for measuring the transmissivity of large, thick, or curved transparent parts including parts already installed. This test method is limited to transparencies that are relatively neutral with respect to wavelength (not highly colored).
1.2 Since the transmissivity (transmission coefficient) is a ratio of two luminance values, it has no units. The units of luminance recorded in the intermediate steps of this test method are not critical; any recognized units of luminance (for example, foot-lamberts or candelas per square metre) may be used, as long as use is consistent.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.
ASTM F1316-90(2008) Referenced Document
ASTM D1003 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
ASTM F1316-90(2008) history
2023ASTM F1316-18(2023) Standard Test Method for Measuring the Transmissivity of Transparent Parts
2018ASTM F1316-18 Standard Test Method for Measuring the Transmissivity of Transparent Parts
1990ASTM F1316-90(2013) Standard Test Method for Measuring the Transmissivity of Transparent Parts
2008ASTM F1316-90(2008) Standard Test Method for Measuring the Transmissivity of Transparent Parts
1990ASTM F1316-90(2002) Standard Test Method for Measuring the Transmissivity of Transparent Parts
1990ASTM F1316-90(1996) Standard Test Method for Measuring the Transmissivity of Transparent Parts