There are some medications that use external containers to measure the dose that users must take. These containers should be cleaned every time they are used so as not to contaminate future users.
Close-up Bottle Cap
Rethinking this interaction with the containers, we devised a lid containing a piston with internal chambers where the base dose is stored per user each time a load is served. This simplifies the process by having a load ready instantly, since it is stored in previous use. It also creates a single lid with internal containers eliminating the need for an external cup that must be cleaned with each use.