LaMotte strips have the following rangesOriginally Posted by PoolDoc
FC, TC: 0 to 10ppm
pH: 6.2 to 8.4
CYA: 0-250 (!)
T/A: 0-240
CH: 0-800
Hach AquaChek 7 strips have the following ranges
FC, TC: 0 to 10ppm (Bromine doubles to 20)
pH: 6.2 to 8.4
CYA: 0-300 (!)
T/A: 0-240
CH: 0-1000
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