scope:

1.1 This test method covers the determination of the number of gels present in plastic film when observing the images formed on a screen when light is projected through the film.

1.2 The thickness of the films covered by this specification is 100 [mu]m (0.004 in.) or less.

1.3 This standard does not purport to address all of the safety problems, 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.

Note 1-There is no similar or equivalent ISO standard.