GAS-PHASE OZONE CONCENTRATION COMPARISONS FROM A COMMERCIAL UV METER AND KI WET-CHEMISTRY TESTS

Formal ozone system power-production tests conducted at ten (10) diffe rent ozone installations have resulted in over 100 comparative UV mete r versus KI wet-chemistry ozone concentration tests for fifteen (15) i ndividual UV meters. The wet-chemistry tests were conducted by differe nt individuals, including the ozone generator manufacturer's technicia n and owner's staff. In all cases, the tests were either conducted or witnessed by one of the authors. This paper presents results focused o n: 1) precision of UV meter readings, 2) accuracy of the wet-test mete r or the UV meter, and 3) expected range in percent difference between UV meter readings and KI wet-chemistry test ozone concentration resul ts for the particular type of UV meter and wet-test meter used in the tests.