Device for determining the physical and chemical parameters...

G - Physics – 01 – N

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G01N 1/22 (2006.01) G01N 1/00 (2006.01) G01N 27/416 (2006.01)

Patent

CA 2460767

The invention relates to a device for determining physical and chemical parameters such as pH value, moisture content or electrical conductivity of aerosol formulations discharged from metered dosed inhalers. The device is essentially comprised of a housing with a measuring chamber, of a measuring electrode and of a device for fixing and opening an aerosol cartridge. In order to carry out a determination, the aerosol to be analyzed is directly transferred out of the cartridge, such as one used in aerosol inhalers, and into a measuring chamber inside of which the measuring electrode carries out the desired measurement.

L'invention concerne un dispositif de détermination de paramètres physiques et chimiques tels que pH, teneur en humidité ou conductivité électrique de formulations aérosol provenant d'aérosols de dosage. Ledit dispositif comporte essentiellement un boîtier contenant une chambre de mesure, une électrode de mesure et un système destiné à enserrer et à ouvrir une cartouche d'aérosol. Selon l'invention, l'aérosol à examiner est prélevé directement dans la cartouche telle qu'elle est employée dans des inhalateurs d'aérosol, et transféré dans une chambre de mesure dans laquelle la mesure adéquate est effectuée au moyen d'une électrode de mesure.

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