When performing the ‘uniformity of weight’ of the dosage unit, how many tablet/capsule can deviate the established limit ?

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Not more than two of the individual weights can deviates from the average weight by more than the percentage given in the pharmacopeia and none can deviate more than twice that percentage.
Weight Variation limits for Tablets:

IP/BP
Limit   
USP
80 mg or less
10%
130mg or less
More than 80mg or Less than 250mg
7.5%
130mg to 324mg
250mg or more
5%
More than 324mg

Weight Variation limits for Capsules:

IP
Limit
Less than 300mg
10%
300mg or More
7.5%

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