Device for spraying a reagent for rapid microbiological analysis

Device for spraying a reagent onto a support (81) for fast microbiological analysis of said support (81), said support (81) being adapted to retain microorganisms on a predetermined surface (82), comprising a hood (3) spray and a nozzle (71) for emitting a jet of droplets of said reagent into a chamber (34) spray composed of said hood (3), characterized in that said device also comprises an absorbent pad (5) mounted against said bell (3) transversely to said jet and closing said chamber (34) from the end opposite said nozzle side (71) with the exception of an opening (51) central circular provided in said pad (5), the diameter being adapted said central opening (51) to allow a portion of said jet, when said device faces said support (81) and is at a predetermined distance therefrom, to pass through said central opening (51) over its entire area and be deposited on all of said predetermined surface (82) of said support (81).