The instrument measures:

Chlorine in the 0.00-5.00 ppm range,

Bromine from 0.00-10.00 ppm,

pH between 6.80 and 8.40,

Cyanuric acid from 0.00-100.00 ppm, and

Alkalinity from 0.00-500.00 ppm.
Using the DPD test reagents, free, combined and total chlorine
measurements can be made. This meter has automatic blank recognition
and zero setting. This hand-held instrument is powered by two
1.5V batteries with a typical life of 20,000 readings.