Apparatus for measuring trace constituents

Claim 1

APPARATUS FOR MEASURING THE AMOUNT OF OZONE IN THE ATMOSPHERE, SAID APPARATUS COMPRISING A GENERALLY CYLINDRICAL VERTICALLY DISPOSED VESSEL HAVING A LOWER PORTION CONSTITUTING A RECTION CHAMBER, SAID REACTION CHAMBER BEING RELATIVELY SMALL IN VOLUME AS COMPARED WITH THE REMAINING PORTION OF THE VESSEL, A CATHODE OF PLATINUM WITHINT SAID REACTION CHAMBER, SAID CATHODE BEINING OF GENERALLY HOWWLO CYLINDRICAL FORM AND IN AXIAL ALIGNMENT WITH AND HAVING AN EXTERIOR DIAMETER AND LENGTH SUBSTNATIALLY THE SAME AS THE INTERIOR DIAMETER AND LENGTH OF SAID REACTION CHAMBER, SAID CHAMBER ADAPTED TO CONTAIN A REAGENT SOLUTION WHICH SUBSTANTIALLY FILLS SAID REACTION CHAMBER AND WHICH INCLUDES A QUANTITY OF HALIDE IN ION FORM WHICH REACTS WITH SAID OZONE TO FORM FREE HALOGEN, AN ANODE EXTERIOR OF AND REMOTE FROM SAID CATHODE AND EXTENDING INTO SAID REACTION CHAMBER SO AS TO BE IMMERSED IN SUCH A REAGENT SOLUTION, SAID ANODE BEING OF A MATERIAL WHICH ANODIZES AND FORMS A PRODUCT WHICH DOES NOT DISSOLVE IN