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and calcium hardness
while the chemical-resistant construction stands up to chlorine and cleaners
it helps you keep filtration within the ideal 10–25 psi range for clear water and efficient backwashing
long-lasting plumbing components
and everyday household plumbing while fitting standard 1
AquaChek TruTest Spa Test Strips Size:50 Strips and calcium hardnessAquaChek TruTest Spa Test Strips give hot tub owners a quick and easy way to test their pool's overall health simply by inserting into the TruTest Spa Digital Test Strip Reader, which provides highly accurate results concerning the three main components of spa chemistry: pH, free chlorine or bromine, and total alkalinity. When combined with the TruTest Spa Digital Test Strip Reader, you get fast results with no need for color matching.
