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Industrial Test Systems⏳TestersITS Europe WaterWorks 480124 Free Chlorine Test Strip, Ultra High II Range, 61 Seconds Test Time, 0-2000ppm Range (Bottle of 50), 1$94.99View
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Happy Hot Tubs⏳TestersHappy Hot Tubs Aquachek Chlorine Test Strips 4 Way Hot Tub Swimming Pool Quick DIP Aquacheck (2 x 50)$70.99View
PeakTech⏳TestersPeakTech 5125 - Conductivity Tester with 21.5 mm LCD Display, from 0 to 2000 µS, Water Systems, Water Conductivity, Water Filter, Tester for Aquarium, Swimming Pool etc. - 270g$349.99View
LaMotte⏳TestersLaMotte Insta-Test 4 Plus, Free Chlorine, Bromine, Alkalinity, pH, Total Hardness Testing$43.99View
Bluelab✓TestersBluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow$231.99View
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