Rapid determination of the Ozone concentration in water by indigo blue reagent;

On-line test in Ozone concentration in intelligence for instruments;

Influences of the meteorological factorson the ozone concentration near the ground;

According to measuring precision,continuity,concentration of ozone and economy,the characteristics and befitting situation of the different methods are analyzed.

The real time monitoring of the concentration of ozone in water is important to ensure the quality of water.

This article described the sterilization characters of ozone and how to control distributing uniformity of ozone gas during the using of freeze-dryer and to prevent the decline of concentration of ozone as well as to reached the time control of sterilization.