This is a Taylor Midget Comparator Chlorine (Free/Total) DPD 1.5-10 ppm Test Kit. The K-1768-2 test for Free and Total Chlorine using a midge comparator and DPD reagents.
If you have a chlorinated pool, then you need to test the chlorine. Ideally, you should be testing every day, especially if your pool is not covered and is exposed to rain, wind, leaves, grass clippings, and sunlight. For chlorinated pools, chlorine itself is one of the most important chemicals to monitor.
