Abstract: An aerosol generator for an aerosol dispenser is presented where, the aerosol generator has a housing having an inlet part comprising a liquid inlet configured to guide a liquid jet (L) into the housing and an air inlet configured to guide an air flow into the housing. The housing further having an outlet part having an aerosol outlet configured to guide an aerosol (C) of liquid mixed with air out of the housing. The air inlet is configured such that at least part of the air flow entering the housing through the air inlet is obstructed at a distance from the liquid jet (L) entering the housing through the liquid inlet, thereby creating a source of turbulence in the housing to interact with droplets of the liquid jet (L) to prevent coalescence of the droplets.

Abstract: An aerosol generator for an aerosol dispenser is presented where, the aerosol generator has a housing having an inlet part comprising a liquid inlet configured to guide a liquid jet (L) into the housing and an air inlet configured to guide an air flow into the housing. The housing further having an outlet part having an aerosol outlet configured to guide an aerosol (C) of liquid mixed with air out of the housing. The air inlet is configured such that at least part of the air flow entering the housing through the air inlet is obstructed at a distance from the liquid jet (L) entering the housing through the liquid inlet, thereby creating a source of turbulence in the housing to interact with droplets of the liquid jet (L) to prevent coalescence of the droplets.

Abstract: Disclosed is an assay device comprising liquid transport means adapted to take up a liquid sample and conduct the liquid to an analyte detection region operable to provide a test signal indicative of the presence and/or amount of an analyte in the liquid sample; the assay device further comprising a sample presence signal generation means, which is not generated by means of an immunoreaction. This sample presence signal generation means can comprise a coloured portion, which is overlaid by a material (e.g. nitrocellulose) that is opaque, when dry, and translucent or transparent, when wet, to allow the coloured portion to become visible to the user. In another embodiment the signal generation means comprises a colour changing material which under-goes a change in its visible properties upon wetting (eg. pH indication). A third embodiment uses a mobilisable detectable which, when wetted by the sample, is carried along resulting in a streaked line parallel with the flow direction.