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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
& Total Hardness - all on the same strip
005ppm (µg/L)) to 100 ppb (µg/L) (
and low–cost option for regulatory compliance monitoring
especially if you live in a swampy area
SenSafe® Free Chlorine Parameter_Chlorine Dioxide & Total Hardness - allCheck your Free Chlorine with Confidence using our SenSafe Free Chlorine Check. Featuring a patented indicator and design, make sure your Free Chlorine levels are where you want them to be. Contains 50 tests. No interference from Chloramines No bleach out at high concentrations Save money by having 2 different ranges in one bottle (using Method A or Method B). Method A: 0. 0, 1. 0, 2. 0, 3. 0, 4. 0, 5. 0, 6. 0, 7. 0 ppm Method B: 0. 00, 0. 05, 0. 10,
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