Visual optical device for the control of halitosis

Abstract

The invention refers to a colorimetric sensor of halitosis, sensitive to volatile sulphur compounds. Said sensor comprises a solid support and a redox calorimetric reagent sensitive to volatile sulphur compounds. The invention also refers to a device for the detection of halitosis, which comprises said sensor located inside a transparent tube. Said device undergoes a visually perceptible colour change when the concentration of volatile sulphur compounds in the analysed gas sample is higher than 200 ppb, preferably higher than 250 ppb.

Dependencies are inferred from the claim text.