Professional 6-in-1 TDS, TOC, COD, UV275, EC & Temperature Meter, Accurate Reliable Water Analyzer, Digital Water Tester for Drinking Water, Hydroponics, Industrial Water, Aquariums, Tap WHY NEED COD & TOC? – TDS can only detect conductive substances in water, such as minerals and some other dissolved solids, but can not detect organic contamination and other harmful substances, so the simple...
Floating Smart Swimming Pool Water Quality Tester 6 in 1 PH/EC/TDS/ORP/Temp APP Digital Display Residual Chlorine Water Tester Pen for Swimming Pool Aquarium and Drinking Water Data Synchronization Display: Just immerse the electrode in the solution to be tested, the data will be synchronized to the mobile APP, multiple data display at the same time, convenient and fast. There is...
Ultimate Pool Water Tester: Accurate, User-Friendly & Smart 27-Parameter Pool & Hot Tub Analyze 
Comprehensive 27-parameter water testing for pools and hot tubs, ensuring crystal clear, safe, and perfectly balanced water. 
Advanced photometer delivers professional-level accuracy for key water parameters, including pH, chlorine, alkalinity, hardness, and more. 
User-friendly app and software with Bluetooth and Wi-Fi capabilities for...
U.S. Pool Supply Open Jaws Shark Floating Pool Chlorine Dispenser, Collapsible Base, Holds 3″ Tablets – 11″ Fun, Scary Teeth Great White Animal Float Floater Decoration, Adjustable Balanced Delivery A professional 11" cute but scary open mouth great white shark with teeth topped floating swimming pool chlorine dispenser with a collapsible tablet tank. The dispenser is made to last from...