SS 323 Pt.B1-1987 Methods Of Test For Flexible Plastic Packaging Materials Part B1 : Determination Of Haze And Luminous Transmittance Of Transparent Plastics
This Standard describes a method for the measurement of the light-transmitting properties, and from these, the light-scattering properties, of planar sections of transparent plastics. Two procedures are covered as follows:
1.1 Procedure A. Using the Hazemeter.
1.2 Procedure B. Using the Recording Spectrophotometer.
NOTE 1. The test method for measuring luminous transmiltance in Procedure A is a simplified procedure which should give results not significantly different from those obtainable if the light source were CIE Source A or C (specified) and the receptor had a spectral response corresponding to the luminosity function y of the CIE standard observer
1.3 Specimens with haze values greater than 30% obtained by these test methods should be considered diffusing or translucent.
SS 323 Pt.B1-1987 history
1987SS 323 Pt.B1-1987 Methods Of Test For Flexible Plastic Packaging Materials Part B1 : Determination Of Haze And Luminous Transmittance Of Transparent Plastics