Form 9A expansion rate jam's video
NBCHAOVIDEO6179 plays · · 2016-01-29
The size of the Leneta 9A sealed Opacity Chart is 140 x 254mm, which meets ASTM standards. The upper 1/2 of the Form 9A is black and white, the middle 1/4 is black, and the lower 1/4 is white.
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