Monday, November 16, 2015

Pharmacopoeial Tests for Different dosage forms

Pharmacopoeial Tests for Different dosage forms


Tablet

·         Uniformity of weight

Weigh 20 tablets selected at random and calculate the average weight. Not more than two of the individual weights deviate from the average weight by more than the percentage shown in Table 2 and none deviates by more than twice that percentage.

Average weight of tablet
Percentage deviation
80 mg or less
10
More than 80 mg but less then 250 mg
7.5
250 mg or more
5

·         Uniformity of content

The tablets comply with the test if not more than one of the individual values thus obtained is outside the limits 85 to 115% of the average value and none is outside the limits 75 to 125% of the average value. If two or three of the individual values are outside the limits 85 to 115% of the average value and none is outside the limits 75 to 125%, repeat the determination using another 20 tablets. The tablets comply with the test if in the total sample of 30 tablets not more than three of the individual values are outside the limits 85 to 115% and none is outside the limits 75 to 125% of the average value.

·         Disintegration


Type of capsule
Disintegration time
Uncoated Tablets
15 minutes
Coated Tablets
film-coated
30 minutes
other coated tablets
60 minutes
Enteric-coated Tablets
0.1M hydrochloric acid
Should not disintegrate in 120 minutes
mixed phosphate buffer pH 6.8,
60 minutes.
Dispersible and Soluble Tablets
within 3 minutes
Effervescent Tablets
5 minutes





Capsule

A.  Content of active ingredients


Weight of active ingredients in each capsule
Subract from the lower limit for samples of
Add to the upper limit for samples of

15
10
5
15
10
5
0.12 g or less
0.2
0.7
1.5
0.3
0.8
1.8
More than 0.12g And less than 0.3g
0.2
0.5
1.2
0.3
0.6
1.5
0.3g or more
0.1
0.2
0.8
0.2
0.4
1.0

B.  Uniformity of weight

Average weight of capsule contain
Percentage deviation
Less than 300 mg
10
300mg or more
7.5

C.  Uniformity of content:
The capsules comply with the test if not more than one of the individual values thus obtained is outside the limits 85 to 115% of the average value and none is outside the limits 75 to 125%. If two or three individual values are outside the limits 85 to 115% of the average value repeat the determination using another 20 capsules. The capsules comply with the test if in the total sample of 30 capsules not more than three individual values are outside the limits 85 to 115% and none is outside the limits 75 to 125% of the average value.

D.  Disintegration:


Type of capsule
Disintegration time
Hard Capsules
30 minutes
Enteric Capsules
0.1M hydrochloric acid
Should not disintegrate in 2 hours
mixed phosphate buffer pH 6.8
60 minutes
Soft Capsules
60 minutes







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