It is an elegantly designed instrument to check the residual chlorine  available in drinking water before and after chlorinating the water. Chloroscope measures the available chlorine content in range from 0.1 to 2.0 ppm (parts per million).

Enzed Chloroscope consumes the reagent orthotolidine. Orthotolidine solution changes the colour of water if chlorine is present to greenish yellow the shade of the tint indicates the content of chlorine and the actual content is measured by comparing on the basis of the color scale attached to the chloroscope.

The kit contains , two number test tubes, one brush to wash the test tubes Orthotolidine solution one bottle of 30 ml with dropper ad the apparatus comparator packed in a box.