You need an FAS-DPD chlorine test, and a disappearing dot based CYA test. However you get those is OK, so long as you don't have a heater. If you have a heater, you ALSO need relatively accurate alkalinity and calcium tests. And finally the pH test in the Taylor K2006 (as well as other Taylor models) can test pH when chlorine levels are in the 10 - 15 ppm range, vs 5 - 10 ppm range for most other kits.

Ben