Abstract: The present invention provides devices and methods for the impregnation of air with the vapor or aerosol of a substance in a ‘controllable manner to enable the testing or training of detection means to evaluate and quantify the presence of the substance in an enclosed volume, and i?• particular to enable production of training aids and quality assurance test items for use in canine-olfaction based security screening.

Abstract: The present invention provides devices and methods for the impregnation of air with the vapour or aerosol of a substance in a ‘controllable manner to enable the testing or training of detection means to evaluate and quantify the presence of the substance in an enclosed volume, and i?• particular to enable production of training aids and quality assurance test items for use in canine-olfaction based security screening.

Abstract: A fluid filter assembly for a water dispensing faucet includes a housing assembly that is constructed and arranged to connect to a water dispensing faucet, a cover assembly that is threadedly attachable to the housing assembly for defining an interior receiving space therebetween and a replaceable filter cartridge installed into the receiving space and being constructed and arranged for filtering a flow of water before that water is delivered to the dispensing faucet. A plurality of reed switches are utilized that are responsive to changes in magnetic flux in order to provide electronic indications of filter status. Some of these electronic indications include the filter cartridge status in terms of its useful life, when a non-approved filter cartridge is installed, when there is no filter cartridge installed, when there is a water leak within the fluid filter assembly, and when one used filter cartridge has been replaced by a new filter cartridge.