Delivered dose (DD) and emitted dose (ED) testing
DD / ED testing
The total dose that are exiting the device and entering the patient’s mouth is referred to as the delivered dose (DD) or emitted dose (ED). Often these tests are combined with the impactor tests and measured through inhaler lifetime (beginning, middle, and end) which is a requirement from regulatory authorities. The testing is described in Pharm. Eur. 2.9.18 and in USP <601>. We use both the DUSA method but also internally developed methods.
See also information about Nebulizers.
Emmace provide these dose measurements on dry powder inhalers, metered dose inhalers, nebulizers and nasal devices.