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APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester Kit

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Ph Test Strips 0-14: 200 Strips Universal Litmus Paper Ph Test Strips For Liquid Testing & Water & Food And Soap Making, Get Highly Accurate Results

Salifert Alkalinity Calcium Magnesium Combo Test Kit

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Apera Instruments AI311 Premium Series PH60 Waterproof Ph Pocket Tester Kit, Replaceable Probe, ±0.01 Ph Accuracy, Lcd Display

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Industrial Test Systems 481348 Copper 3 in 1 Pool Check | Made In USA | 3 Parameter Pool Test Strips | Copper, Ph, & Total Alkalinity | Easy Match

Taylor Pool Water Test Kit, Complete Swimming Pool Water Test Kit, For Chlorine, Ph, And Alkaline Levels, Ideal For Pools, Hot Tubs, And Spas, 1-Pack

Varify Water Hardness Test Kit - Water Testing Kit For Home, Drinking, Well, Spa, Swimming Pool, Softener, Dishwasher & More - Hard Water Test