Malodorant

Abstract: A device for testing human exhalation for halitosis, comprising a chamber having an air inlet through which the exhalation to be tested is admitted into the chamber and an air outlet through which the exhalation tested is discharged from the chamber, a sensor element located in the chamber and, when heated to a first temperature, sensitive to malodorant gases of predetermined chemical compositions for producing a signal variable with the detected concentration of the malodorant gases, a heater element which, when electrically activated, is operative to heat the sensor element selectively to the first temperature or a second temperature, the second temperature being higher than the first temperature and being selected to regenerate the sensing means, a control circuit responsive to the signal from the sensor element for determining the degree of malodorousness on the basis of the signal and producing a signal representative of the degree of malodorousness determined, and a display screen or a plurality of indicators responsive to the signal from the control circuit for displaying information relating to the degree of malodorousness represented by the signal from the control circuit.

Abstract: The present invention relates to the discovery that the oral malodorant reduction activity of stabilized chlorine dioxide solutions and chlorite solutions may be significantly enhanced through the use of oral-cavity pre-conditioning solutions such as fruit juices, natural fruit-acid solutions and a number of commercial soft drinks which have pH's below about 6. The liquids predispose the oral surfaces and tissues of the mouth and the malodorant molecules associated with these surfaces to be more reactive to and/or affected by the subsequent exposure to the stabilized chlorine dioxide and chlorite oral rinse solutions.

Abstract: PROBLEM TO BE SOLVED: To simultaneously remove tacky substances and malodorant components in exhaust gas by pre-forming an adsorbent layer of a desired thickness in the primary side of a filter cloth by feeding to a bag filter an adsorbent of an average particle size of a specific value and clean air and after then feeding exhaust gas to the bag filter. SOLUTION: An adsorbent comprising, for example, active carbon powder of an average particle size of 1-100 micron meter, preferably 1-approximately 30 micron meter is charged into an adsorbent feed hopper 5. The adsorbent is fed to an exhaust gas duct P1 through an adsorbent feed pipe 7 by the suction force of an exhaust fan F and the feed of high-pressure air, and also is fed into a bag filter 1 after being mixed with clean air through an air introducing pipe 4, and is sticked on the primary surface of a filter cloth 2 to form an adsorbent layer of a desired thickness. Then, the exhaust gas containing resin components and malodorant components is fed into the bag filter 1. The exhaust gas is exhausted into the atmosphere through an exhaust gas duct P2 after passing through the filter cloth 2, tacky substances are sticked on the near- surface place of the adsorbent layer, and the malodorant components are adsorbed in the adsorbent to be removed.