The AQUAB series handy water quality meters are easy-to-operate water quality photometers. As the concentration conversion curves are pre-programmed, measurements can be performed immediately after zero-point adjustment using sample water. Two-point calibration is enabled by setting to user calibration mode. Up to 99 measurement values can be stored in memory.

■ Main Functions
● Memory function
　 Measurement values are automatically saved up to 99 points.
　 In memory check mode, you can check the measurement value immediately.
● Turning the power OFF automatically or manually
　 The power can be automatically turned OFF even if you forget to turn it OFF. You can also turn the power OFF manually.

● For measuring high-concentration residual chlorine
Sterile water such as a sodium hypochlorite solution and hypochlorous acid water (acidic electrolyzed water, etc.) are used in wide fields such as hygienic control of various types of foods including eggs and vegetables, towels and other items in hairdressing salons and barbers, and medical equipment as well as for the prevention of infection with diseases. To maintain a sufficient antiseptic effect, you must confirm that the residual chlorine concentration is surely maintained at a certain level. The DPD method, usually used as the method to measure residual chlorine concentration, has a characteristic that it cannot measure high-concentration residual chlorine.
The AQ-202 uses the iodine method and can measure high-concentration total residual chlorine up to 300 mg/L.