7 in 1 PH/Free Chlorine/ORP/EC/TDS/Salt/Temp pH Meter Swimming Pool Salinity Tester IP67 Waterproof from other stores

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  Pool Salt Tester pH and Salt M...

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  $27.29 Delivery: $1.99 Go to store
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  Durlclth pH Tester - Portable ...

  Durlclth pH Tester - Portable pH Tester Chlorine Meter Swimming Pool Spa Water... Durlclth pH Tester - Portable pH Tester Chlorine Meter Swimming Pool Spa Water Quality Monitor Checker for swimming pool and spa Specifications: Size: approx. 18 x 11.6 x 3.1cm / 7.1 x 4.6 x 1.2 Power Supply: 1 x 1.5V AA Batteries(not included)... more

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  $27.99 Delivery: $15.00 Go to store