What Michael and Janet said:
DPD-FAS kits (different from DPD tablets) are mostly a Taylor product. Ben uses the DPD-FAS test for chlorine in his kit. So does the Taylor 2006 kit, and Leslie's sells a DPD-FAS kit under its own brand that's the Taylor kit.
DPD-FAS measures Free Chlorine (FC--the good stuff) and Combined Chloramines(CC-the used up stuff that smells like chlorine)
Total Chlorine (TC) is the sum of FC and CC.
Best is when CC=0.
The pH test from any of these, or even from the little $7 OTO/pH test kits is FINE and will do the job.
Don't rely on test strips--they are inaccurate.
Good luck!
Carl
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