Form 9A is a black and white sealed opacity-display chart. The top most area is strip, then black and then white with overall dimensions of 5-1/2 x 10 in (140 x 254 mm).
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Form 9A is a black and white sealed opacity-display chart. The top most area is strip, then black and then white with overall dimensions of 5-1/2 x 10 in (140 x 254 mm).