The Ability to crumble of sand is known as friability
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friability
F=I-F.100/I
where I =Iinitial weight of tablets ,
F = weight after friability.
Normal limit less than 1%.
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behnchood
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NMT 2%
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Friability erythema and erosion in the stomach means that the
stomach is red and there is lose of the lining. It can occur from
tiny sores in the stomach.