WATER ANALYZER AND METHOD FOR DETERMINING DETERIORATION OF ULTRAVIOLET LAMP

摘要

To enable deterioration of an ultraviolet lamp to be appropriately determined.SOLUTION: A water analyzer is configured to: use an oxidizer having such a property that an amount of decomposition of the oxidizer increases as the intensity of ultraviolet light with which the oxidizer is irradiated increases; irradiate the oxidizer with ultraviolet light for a predetermined time from an ultraviolet lamp; then measure the absorbance of the oxidant by a measuring unit; and automatically determine the deterioration of the ultraviolet lamp based on an absorbance measurement value.SELECTED DRAWING: Figure 1