Method and device for analyzing a device for spraying a pharmaceutical fluid product

A method for analysing a device for spraying a pharmaceutical fluid product, characterized in that it comprises the following steps:

• providing a spray head for a device for spraying a pharmaceutical fluid product, said spray head comprising a spray orifice,
• providing a receiving surface comprising a plurality of discrete contact zones separated by voids, said contact zones being electrically conductive,
• passing a flow of ionised gas through said spray orifice of said spray head, said flow of ionised gas being charged with electrons,
• sending said flow of ionised gas onto said receiving surface,
• visualising an impact zone for said flow of ionised gas on said receiving surface, and
• determining from said visualizing of said impact zone whether or not said impact zone complies with predetermined specifications;
• and
• wherein an operating cycle comprises the following steps:
• connecting said receiving surface to ground in order to eliminate any electrical charges,
• generating said flow of ionised gas and sending it through said spray head onto said receiving surface,
• detecting each contact zone which becomes charged with negative ions in contact with said flow of ionised gas, and
• visualising said impact zone with processing means.