EXP 9 (POST-LAB) Flashcards
is defined as the state in which any residue of the unit except for the fragments of the insoluble coating or capsule shell remaining on the screen of the test apparatus is a soft mass having no palpably firm core
DISINTEGRATION
This test is performed to provide whether tablets or capsules disintegrate within the prescribed time when placed in a liquid medium at experimental conditions
Disintegration Testing
DISINTEGRATION APPARATUS PARTS:
- BEAKER
- THERMOSTATIC DEVICE
- DEVICE
- VESSEL
- BASKET RACK ASSEMBLY
BEAKER DIMENSIONS:
1000mL; 138-160mm in height
Part used for heating the fluid
Thermostatic device
Part used for raising and lowering the basket
Device
Part that contains the fluid to be heated
Vessel
Part that contains the sample to be tested
Basket-rack assembly
These are substances or agents added to compressed tablets to cause them to “break
apart” or disintegrate, when place in aqueous medium.
Disintegrants
DISINTEGRANTS EXAMPLES:
- Starch
- Clays
- Cellulose derivatives
Tests:
A. Uncoated tablets and Plain Tablets
Temperature:
Fluid:
Result:
37+/-2C
Water or specified immersion fluid
All of the tablets disintegrate completely, if 1 or 2 tablets fail to disintegrate, repeat the test on 12 addition tablets.
Tests:
B. Delayed-Release tablets
Temperature:
Fluid:
Result:
37 +/- 2C
Gastric fluid TS and Intestinal Fluid TS
1. GF TS: After 1 hr, observe. The tablet should
not disintegrate
2. IF TS: all of the tablets should disintegrate
completely.
Tests:
C. Buccal tablets
Procedure is same as uncoated tablets. The only difference is the
time of observance.
Tests:
D. Sublingual tablets
Procedure is same as uncoated tablets. The only difference is the
Result. At the time limit specified in the individual monograph, all tablets have disintegrated.
Tests:
E. Hard Gelatin Capsule and Soft Gelatin
Capsules:
* Same as uncoated tablets.
Difference:
attachment of a removable wire
cloth, which has a plain square weave to the surface of the upper plate of the basket-rack assembly
Uncoated Tablets:
Medium:
Time:
Water, 37degreesC+/-degreesC
30mins
Buccal Tablets
Medium:
Time:
Water, 37degreesC+/-degreesC
4 hrs
Sublingual Tablets
Medium:
Time:
Water, 37degreesC+/-degreesC
3 mins
Enteric Coated Tablets
Medium:
Time:
Water, Room temp
Simulated Gastric Fluid, 37°C ± 2°
Simulated Intestinal Fluid, 37°C ± 2°
1 hour
How many samples are there in stage 1
6 tablets
Criteria for Stage 1
All should disintegrate; if two tablets did not disintegrate proceed to stage 2
How many samples should be used in stage 2
additional 12 tablets; totalling to 18 tablets
Criteria for Stage 2
nmt 2 of the 18 tablets tested failed to disintegrate