Pool sensors and probes

PH Meter, Eletorot PH Tester for Swimming Pools, 4 in 1 PH Meter, Electronic TDS Water Quality Meter and pH Test for Drinking Aquariums, Hydroponics, Swimming Pools

PH Meter, PH Tester for Swimming Pools, 4-in-1 PH Meter, Electronic TDS Meter, Water Quality and pH Test for Drinking Aquariums, Hydroponics, Swimming Pools

2PCS Water Quality Tester, Electronic pH Meter Tester, TDS&EC Temperature Meter, 4 in 1 Water Quality Tester with LCD Display, High Accuracy Resolution 0.01, for Swimming Pool, Drinking Water

3-in-1 Digital Water Quality Tester, TDS, EC Meter and Temperature Meter - TDS Meter for Drinking Water, Hydroponics, Swimming Pools, Aquariums

Water Quality Tester Electrolyzer - Portable Water Impurity Monitor - Water Test Meter - Electrolyzer Machine

3-Piece Water Quality Tester Set: Electronic pH Meter, TDS & EC Meter, Temperature Meter, Mineral Detection Pen, 4-in-1 Water Quality Tester with LCD Screen, High Accuracy 0.01--TRIM

Pen Type EC Meter ABS LCD Househeld Conductivity Pen ATC Portable Water Quality Measurement Tool

Inbagno – Testeur électronique de qualité d'eau pour piscine – Mesure pH et chlore – Câble 130 mm – Compatible avec piscines et SPA familiaux

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

GROOFOO Salinity Meter Digital PenType Salinity Tester for Seawater Salt Water Swimming Pool

Portable LCD Digital Food Beverage PH Tester Aquarium Pool Water Quality Testing Pen Meter

Total Dissolved Solids Meter Temperature Compensation Auto Speediness Water Quality Monitor for Field WorkGreen

Electronic Tester Meter, Digital TDS&EC Tester 3 in 1, Thermometer, Meter for Testing TDS/EC in Drinking Water/Aquarium/Swimming Pool

4-in-1 pH Meter, pH Tester, pH Meter with LCD Screen, High Precision Resolution 0.01, Swimming Pool pH Meter

Swimming Pool Salinity Tester, 5 in 1 Digital Seawater Salinity Tester, Ip67 Waterproof Test Kit

LCD Digital TDS Meter with ATC Automatic Temperature Compensation Backlight Display TDS Tester for Water

PH Value Meter Portable Water Quality Tester with LCD Display for Pools Hydroponic Aquarium Laboratory

Water Quality Tester 0 to 4999ppm Temperature Compensation Auto Water Testing Pen for Field Operation

Water quality tester, portable electrolyzer, water impurity monitor, water test meter, electrolyzer machine

Chlorine and pH Tester CL2 with Probe, Water Quality Analyzer for Swimming Pool, Replacement Accessories for Spa Tester pH Swimming Pool Tester CL, Electronic Swimming Pool PH and CH Tester

Portable pH and Chlorine Level Tester, 2-in-1 Water Quality Analysis Instrument

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

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

TDS&EC Water Quality Tester, 3 in 1 LCD Display TDS EC Meter Digital Tester Temperature Meter, Conductivity 0-9999PPM, Drinking Water Quality Monitor Tester Pen（blue）

Digital salinity tester, high precision, wide temperature range, large LCD screen, water quality tester for EC Temp SG

Electronic pH Meter, 5-in-1 Pool Water Tester with Backlight, pH/TDS/EC/Salinity/Temperature with ATC, High Precision pH Meter

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

Water Quality Tester Electrolyzer - Portable Water Impurity Monitor - Water Test Meter - Electrolyzer Machine -

Electronic pool tester – pH and chlorine, 13cm cable, high accuracy, waterproof, clear LCD display

2PCS 5-in-1 Digital pH Tester, High Precision, with Backlit Screen, pH/EC/TDS/Salinity/Temperature, 0.01 Resolution, TDS for Drinking Water, Swimming Pool

Portable swimming pool water tester, pH detector, chlorine detector, water quality test monitor

Electronic pool water quality tester for pH and chlorine levels, 13 cm cable

PC-102B CL2 Professional Chlorine and pH Analyzer with Probe Water Quality Analyzer for Swimming Pools and Spas

Portable Digital LCD TDS-3 Drinking Water Meter, Water Quality Tester Pen with Temperature and PPM Measurement, Water Purity Tester 0-9990 PPM, Suitable for Drinking Water and Hydroponic Cultivation (

pH TDS meter, 5-in-1 water quality tester (PH/TDS/EC/salt/temperature), green backlit LCD TDS meter for swimming pool/aquarium/pond

TDS&EC Water Quality Tester, 3 in 1 LCD Display TDS EC Meter Digital Tester Temperature Meter, Conductivity 0-9999PPM, Drinking Water Quality Monitor Tester Pen（White）

4-in-1 Electronic pH Meter with Backlit LCD Display, Water Quality Tester for Measuring pH, TDS, EC and Temperature, for Drinking Water, Aquariums and Swimming Pools.

in 1 TDS Water Quality Tester - Widely Used Testing Tool - pH Meter for Drinking Water, Aquarium, Swimming Pool, Spa

LCD TDS Water Quality Tester - Digital Monitor for Water Purity Measurement, Ideal for Swimming Pools, Spas, and Hydroponics

Salt tester, pH meter, 5-in-1 digital water tester for salinity, temperature, conductivity and TDS for swimming pool, spa and aquarium.

TDS-2B Water Quality Meter Tester Digital LCD Professional Measuring Pen Water Hardness Mineral Impurity Content in Water

Digital pH and TDS Meter Combo, 0.05ph pH Tester with High Accuracy +/- 2% Reading Accuracy TDS Tester, Water Quality Tester for Drinking Water/Swimming Pool/Aquarium/Swimming Pool

[NEVER USED] Portable Digital LCD TDS-3 Drinking Water Meter Tester Water Quality Meter Pen Temperature and PPM Water Purity Tester 0-9990PPM Drinking Water Hydroponic (Does not test PH)

[NEVER USED] 4-in-1 pH Meter, pH Meter Tester, pH Tester, pH Meter with LCD Display, High Precision Resolution 0.01, Swimming Pool pH Meter

[NEVER USED] Water electrolyzer electrolysis test, portable water quality tester Lightweight water contaminant monitor Electrolyzer test monitor

[NEVER USED] Swimming Pool pH Tester, 4-in-1 Electronic PH TDS Meter, Water Quality Tester, Temperature with LCD Display, Test for Drinking, Aquariums, Hydroponics, Swimming Pools

Portable digital LCD drinking water meter TDS-3, water quality tester with temperature and PPM measurement, water purity tester 0-9990 PPM, suitable for drinking water and hydroponic cultivation (PPM

[NEVER USED] Water Quality Test Meter TDS PH EC Temperature 4-in-1 Set Digital Tester with LCD Display Test for Swimming Pool, Aquarium

[NEVER USED] 4-in-1 Electronic pH Meter for Swimming Pools, pH, TDS, and Temperature, with LCD Screen, for Drinking Water, Aquariums, Hydroponics, and Swimming Pools

Tetra Test Strips 6in1 x10 strips - 10tes - 591214

[NEVER USED] PH Meter, PH Tester for Swimming Pools, 4-in-1 PH Meter, Electronic TDS Meter, Water Quality and pH Test for Drinking Aquariums, Hydroponics, Swimming Pools

[NEVER USED] Digital pH Meter Tester, 0.01 Resolution 0-14 pH, 4-in-1 TDS EC Temperature Meter, Water Quality Tester with Backlit LCD, Automatic Calibration, Drinking Water Pool Test-A

[NEVER USED] PH Meter Tester, 4-in-1 Electronic Swimming Pool PH Tester, PH TDS EC and Temperature Meter, Water Quality Tester with LCD Display and Reading Accuracy, for Swimming Pool, Aquarium

[NEVER USED] Swimming Pool Salinity Tester, 5-in-1 Digital Seawater Salinity Tester, IP67 Waterproof Test Kit

[NEVER USED] Water Electrolyzer Test Electrolysis Water Tools Water Purity Level Meter Water Quality Tester Sight

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