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4-in-1 TDSEC Digital TDS & Temperature Water Tester - 0.0001ppm High Accuracy, Portable with Protective Case & LCD Backlight, Battery-Powered for Drinking Water, RO/DI Systems, Aquariums, Pools, Outdoor Travel, Compact Design, Durable Construction, Aquarium Hobbyists

$8.81
-67%
18

1pc 7-in-1 pH TDS EC ORP salinity S. G thermometer water quality monitoring instrument, suitable for drinking water and aquarium pH meters

$22.74
-28%
18

3-key TDS Pen For Water Quality Testing, TDS&EC Thermometer Dual Color Conductivity Multifunctional Water Testing Pen

20

2 Pack - TDS Meter, 3 In 1 TDS, EC & Temperature Meter, Accurate & Reliable PPM Meter, Digital Water Testing Kits For Drinking Water Quality, Tap, Well, Swimming Pool, Aquarium, RO/DI System, Hydroponics

41

Water Quality Tester, Ph Tester Digital, Digital Salinity Meter And PH Tester For Aquarium And Pool Saltwater Water, 5 In 1 Salinity PH Temp EC And TDS Meter, Aquarium Swimming Pool Hot Tub, High Accuracy

$24.60
-57%
10

TDS Meter PH Tester, 0.01 High-precision Digital PH Meter, PH/ TDS/ EC/ Salt/ Temperature Tester, PPM Meter Water Tester, Used For Drinking Water, Hydroponics, Plants, Aquariums, And Swimming Pools

$32.19
-62%
69

TDS Meter Digital Water Tester, 4in 1 TDS EC Temperature Meter, Water Quality Hardness Testing Kits, High Accuracy PPM Meter for Drinking Water, Hydroponics, Aquarium, Pool, RO System

5-in-1 High-Accuracy Digital TDS & pH Meter - Measures 0.01 PPM, EC, Salt, Temperature - LCD Display, Easy-to-Use Water Tester for Drinking Water, Hydroponics, Plants, Aquariums, and Pools, Water Quality Testing | Digital Display Meter | Lightweight Tester, Pool Water Tester Digital

$63.95
-81%
101

2-in-1 Water Quality Analyzer with Digital Display - Chlorine & pH Meter for Pool, Spa, Well, and Tap Water - Includes Probe, Cables, and Battery (Not Included) - Portable Design for Home and Professional Use, Pool Water Tester, Poolside Equipment, Modern Device, Durable Construction

$83.14
-84%

2pcs Professional Heavy-Duty Water Quality Tester - 3-in-1 TDS/EC/TEMP Meter with LCD Display, Portable Drinking water, Aquarium, Laboratory Tester - High Accuracy 0.0001, No Assembly Required, Includes Batteries, Aquarium Maintenance, Sleek Design, Clear Measurement Display

6

5 in 1 PH Meter for Water, PH/ TDS/ EC/ Temp/ Salt Meter, Salt Tester for Saltwater Pool, 0.01 Resolution High Accuracy Digital PH Tester for Hydroponics, Water, Wine, Aquariums and Fish Tank

$63.95
-81%
41

1pc 7-In-1 Ph TDS EC ORP Salinity S. G Thermometer Water Quality Monitoring Instrument, Suitable for Drinking Water And Aquarium Ph Meters

$22.74
-33%
30

Pool Water Quality Tester, CL2/PH Dual-Function Water Analyzer, Laboratory Water Testing Device, AA Battery Powered (Batteries Not Included)

$16.33
-34%

1pc-4-in-1 PH/ TDS/ EC/ Thermometer Digital Water Quality Monitor for Swimming Pools, Drinking Water and Aquariums.

$31.59
-62%
25

4-in-1 Handheld Water Quality Test Pen: pH/EC/TDS/Temp Tester with Backlight, USB Rechargeable Digital Meter for Home Drinking Water, Pools, Aquariums, Multi-Purpose Use, Pool Water Testing, Compact Tester, Reliable Performance, Ec Tester, Pool Maintenance

$16.80
-36%
2

Digital PH And TDS Meter Kits Water Quality Tester, 0.01pH High Accuracy Pen Type PH Meter 3-in-1 TDS EC Temperature Meter Water Quality Tester with Faux Leather Cover Tester for Hydroponics, Pool And Aquarium

1pc Multifunctional Digital Water Tester - TDS/EC/PH Meter with Backlit LCD Display, Portable Water Quality Monitor for Home, Laboratory, Aquarium, Pool - Measures TDS, Conductivity, pH Levels - Compatible with CR2032/Coins Cells (Industrial/Commercial Use), Userfriendly Interface, Quality Craftsmanship, Ec Monitor, Home Users

PH Meter, 5 In 1 PH/TDS/EC/Salinity/Temp Meter, Pool Salt Tester, 0.01 Resolution High Accuracy Water Tester For Drinking Water, Hydroponics, Saltwater Pool, Aquarium, Koi Fish Pond

$40.54
-69%
10

7-in-1 Digital Pool Salt Tester - Multi-Color LCD Display for Salinity, pH, ORP, EC, TDS, Temp - Water Tester for Pools, Hot Tubs, Spas, Aquariums, Pool Water Tester, Userfriendly Design, Digital LCD Display, Clear Readability

Cloud Prime 5-in-1 Water Quality Tester with Voice Broadcast - PH, EC, TDS, Temperature & Salinity Measurement Pen

$63.59
-66%
1
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