Dissolution 711
PART 1
Medium:
simulated gastric fluid TS, without enzyme; 800 mL.
Apparatus 1:
100 rpm.
Time:
60 minutes.
PART 2
pH 6.0 phosphate buffer
Dissolve 8 g of sodium chloride and 36.8 g of monobasic potassium phosphate in 4000 mL of water. Adjust with 2 N sodium hydroxide to a pH of 6.0 ± 0.1.
Medium:
pH 6.0 phosphate buffer; 800 mL.
Apparatus 2:
100 rpm.
Time:
30 minutes.
Test solution
Empty the contents of 10 Capsules, and transfer an accurately weighed portion of the contents, equivalent to the concentration of USP Units of lipase activity per mL in the Standard solution (between 8 and 16 Units per mL), to Apparatus 1.
Procedure
Proceed according to the conditions for
Part 1. After 1 hour, remove the baskets, and allow the excess
Dissolution Medium to drain. Transfer the contents of each basket to the dissolution vessels in
Part 2 with the aid of a few mL of
Dissolution Medium. Proceed according to the conditions for
Part 2. After 30 minutes, remove a 10-mL portion of the solution under test, transfer to a test tube, and cool to 4
. Proceed as directed in the
Assay for lipase activity under
Pancrelipase.
Tolerances
Not less than 75% (Q) of the labeled USP Units of lipase activity per Capsule is dissolved.