I'm currently a 3rd year Mechanical Engineering student at the University of Glasgow. We have been set the task of designing a dry powder inhaler that is to be used in less-developed countries. This must be made of plastic. However, many other specifications of the design are undefined. In order to gain a better insight to the use of dry powder inhalers and how their design can be improved, would it be possible to ask if you can complete this short survey? I undertook this myself and it took me less than 5 minutes.