Updated USP Monograph 1092

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from the withdrawn solution ... diluted hydrochloric acid, buffers (phosphate or acetate) in the physiologic pH range of 1.2–7.5, simulated gastric or ... for a sustained period (typically, 15–60 min), after which time an additional sample is taken. Although there is no requirement for 100% dissolution in the profile, the infinity point can be

  Solutions, Acid, Hydrochloric, Hydrochloric acid