Pool sensors and probes

pH tester, digital LCD water quality test meter for aquariums and swimming pools (EU plug 220V)

Battery-free red water quality detector (Related offer)--BIEMMEDUE

6-in-1 multi-function test strips for swimming pools: residual chlorine, pH, alkalinity, hardness (sold individually)

Battery-free TDS water quality meter for analyzing minerals and impurities--BIEMMEDUE

PH Meter, 5 in 1 PH/TDS/EC/ORP/Temperature Meter Tester, Water Quality Monitor Tester for Swimming Pools, Hydroponics, Drinking Water, Aquariums

Chlorine and pH CL2 Tester with Probe, Swimming Pool Water Quality Analyzer, Replacement Accessory for Swimming Pool pH Tester, Cl Tester, Electronic Swimming Pool pH and CH Tester

Portable tap water quality tester – electrolytic analyzer with titanium and ABS rods

Electronic pH Meter, 5-in-1 Pool Water Tester with Backlight, pH/TDS/EC/Salinity/Temperature with ATC, High Precision pH Meter with 0.01 Resolution, for Drinking Water, Aquarium, Spas

Electronic pH Meter, 5 in 1 Pool Water Tester with Backlight, pH/TDS/EC/Salinity/Temperature with ATC, High Precision pH Meter with 0.01 Resolution, for Drinking Water, Aquariums and Hot Tubs

pH Meter, 5-in-1 pH/TDS/EC/Salinity/Thermometer, LCD Screen pH Tester, Automatic Temperature Compensation, Electronic pH Meter, Suitable for Drinking Water, Aquariums, Swimming Pools

3-in-1 LCD Digital Water Tester: Temperature, TDS, CE – Accurate ±2%, LCD screen with lock

Portable Water Electrolysis Tester – Iron and Aluminum Electrodes – Measuring Range 50–200 mg/l – TDS Pen Included

2-in-1 chlorine pH tester, chlorine water quality analyzer, CL2 measuring device.

PH Meter Tester, 3-in-1 Electronic Swimming Pool PH Tester, TDS Meter Temperature, Water Quality Tester with LCD Display and Reading Accuracy,

Saltwater Salinity Tester, Swimming Pool Salt Tester, Multifunctional Water Quality Tester with Backlight for Seawater, Aquariums C-100 5-in-1 Saltwater Swimming Pool Test Kit

pH tester, LCD digital water quality meter for aquariums and swimming pools (EU plug 220V)

5 in 1 Electronic PH Meter Tester, PH Meter with Backlight LCD Display, Water Quality Tester for Testing pH/TDS/EC/Temperature/Salinity, for Drinking Water/Aquarium/Pool KCVV

3-in-1 Portable Digital TDS PH TEMP Meter Water Quality Tester Purity Test Pen

5-in-1 Pool Tester: pH, TDS, EC, Salinity, Temperature, Backlit Screen for Drinking Water and Aquariums

Water Quality Test: Salinity, C-100 5-in-1 Salinity TDS EC Seawater Tester, Multifunctional Water Quality Tester with Backlight

pH Meter Tester, 3-in-1 Electronic Pool pH Tester, TDS Meter, Temperature Tester, Water Quality Tester with LCD Screen and Accurate Readings, for Swimming Pools and Aquariums

Electronic pH Meter, 5-in-1 Pool Tester Kit, pH/TDS/EC/Salinity/Temperature Tester, VA Backlit Display, Pool Salt Tester, for Drinking Water, Aquarium, Swimming Pool

5-in-1 Electronic pH Meter Tester, Measures pH & TDS & EC Salinity & Temperature Water Quality Tester, LCD Screen and Reading Accuracy, for Drinking Water, Aquariums, Swimming Pools etc.

5-in-1 Electronic pH Meter Tester, Measures pH & TDS & EC Salinity & Temperature Water Quality Tester, LCD Screen and Reading Accuracy, for Drinking Water, Aquariums, Swimming Pools etc.

Electronic PH Tester, 10 in 1 Swimming Pool Water Tester with Backlight, PH/TDS/SG/EC/ORP/H2/Salinity/Temperature/Fertility of nutrient solution/㏁ Resistivity with ATC, 0.01 Resolution High Accuracy P

[NEVER USED] Swimming pool salinity tester, saltwater pH and salinity tester, 7-in-1 digital tester, swimming pool pH and salinity tester

AIPERQ 5-in-1 Digital pH Meter Electronic pH Tester for Water with LCD Screen – Measures pH, ORP, HA2, TEMP, for Swimming Pools, Aquariums, Hydroponics and Spas

Zoternen – Testeur de qualité de l'eau numérique – pH-mètre et détecteur de chlore – Grand écran – Pour piscine et eau potable – Sans batterie

[NEVER USED] Hydrometer and pH meter, numeric salt meters and PH. 5 salt readings in pH, Temp, and TDS.

5-in-1 digital water quality tester with TDS/EC/pH/salinity/temperature

3-in-1 LCD Digital Water Tester: Temperature, TDS, CE – Accurate ±2%, LCD screen with lock

Water Quality Tester Portable Digital Water Quality Tester Orp Tester Pen Water Quality Analyzer for Alcohol Pools Aquarium Water Quality Tester

[NEVER USED] Chlorine and pH Water Meter Tester Kit, Portable Digital Water Quality Monitor, Electronic Water Quality Analyzer Test Kit for Swimming Pools and Spas

5-in-1 Digital Water Quality Tester pH/TDS/EC/Temperature - For Swimming Pools, Drinking Water, Aquariums

pH Meter, 5 in 1 pH/TDS/EC/Salinity/Temperature Water Quality Monitor Tester for Swimming Pools, Hydroponics, Drinking Water, Aquariums

[NEVER USED] Swimming pool water tester pH and chlorine content, electronic 13 cm cable, spa chlorine test

[NEVER USED] Chlorine, pH and Chlorine Cl2 Tester – Water Level Monitoring for Pool, Spa – with Probe

[NEVER USED] Water Quality Tester, Water Quality Tester, Automatic pH Tester for Residual Chlorine, pH Water Tester, Chlorine Analysis for Swimming Pools, Test Kit

LCD TDS-3 Drinking Water Quality Tester, Digital PPM Temperature Tester, Pen Analyzer for Measuring Drinking Water, Hydroponics, Aquariums, Swimming Pools, and Spas

Combined digital pH meter and TDS, 0.05ph pH tester with high accuracy +/- 2% reading accuracy TDS tester, water quality tester for drinking water / swimming pool / aquarium / swimming pools (brewing)

Combined digital pH meter and TDS, 0.05ph pH tester with high accuracy +/- 2% reading accuracy TDS tester, water quality tester for drinking water / swimming pool / aquarium / swimming pools （White） S

Electronic pH tester, TDS, pH, EC, temperature, 4-in-1 kit for swimming pool, aquarium, reverse osmosis system, laboratory

8-in-1 electronic pH meter for swimming pools, pH/TDS/salt/SG/ORP/EC/temperature/H2 tester, water quality tester for swimming pools, spas, aquariums, drinking water and hydroponics

ORP-986 Portable Pen Type ORP Meter Water Quality Tester Analyzer Experiment Detection Monitor 6.9 x 1.3 x 0.7 inch Used in Industry and Experiment (Blue Backlight), pH, Conductivity and Tds

Water Electrolyzer Electrolysis Test,Portable Water Quality Tester Lightweight Water Impurity Monitor Electrolyzer Test Monitor

2 in 1 Digital pH Temperature Monitor Tester Sensor Kit 0-14.0pH Measures Automatic Calibration

Water quality tester, 2 in 1 pH tester and chlorine meter, CL2 chlorine water quality measuring device for swimming pool aquariums

Chlorine and pH tester CL2 with probe, water quality analyzer for swimming pool, replacement accessory for spa tester ph swimming pool tester key ph and ch tester electronic swimming pool

4-in-1 Water Quality Test Pen, pH/EC/TDS/TEMP Tester for Swimming Pool and Beverage Laboratory

Portable Mini Pen Type ORP Meter Redox Meter Negative Potential Meter Water Quality Tester Pen Analyzer for Aquarium Swimming Pool

pH & Cl2 Test 2 in 1 Electronic Digital SPA Water Quality Tester, Residual Chlorine Analysis Detector Monitor

5-in-1 pH Meter: pH/TDS/EC/Salinity/Thermometer, LCD, Automatic Temperature Compensation, for Drinking Water and Aquariums