iPstyle Digital TDS Meter Water Tester, PPM Water Quality Tester Measuring Range 0-9999ppm, Ideal for Drinking Water, Swimming Pool, Aquariums, Hydroponics (Grey) (TDS)

$42.69

APEC TDS Meter Digital Water Quality TDS Test Kit Meter with Carrying Case, 0 to 1999 ppm Measurement Range, 1 ppm Resolution, 2% Readout Accuracy

$11.99

HM DIGITAL TDS Meters TDS-3 Handheld Temperature TDS ( PPM ) Tester, 0 - 9990 ppm, 1 ppm Resolution, +/- 2% Readout Accuracy Testing Water Quality For Hydroponics Aquariums Pools Drinking etc

$93.5

HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy (2 pack)

$346.67

TDS Meter Digital Water Tester - ppm Meter, EC & Temperature Test Pen 3-in-1 | Easy to Use Water Quality Tester | Ideal for Testing RO Drinking Water Hydroponics Aquarium Swimming Pool & More (Green)

$42.15

TDS Meter Digital Water Tester,WoEluone 3 in 1 TDS,Temperature and EC Meter,Accurate Ideal PPM Meter for Drinking Water, Aquariums,RO System and More

$34

TDS Meter Digital Water Tester - PPM Quality Testing Tool 3-in-1 (TDS, EC & Temp) High Accuracy ATC Tester, Nutrient Testing Pen for Hydroponics, Monitor Ro System, Pools, Aquariums & Saltwater Tanks

$538.67

Tds Meter Digital Water Tester - Affordable & Reliable Water Testing Kits for Drinking Water - 0-9990ppm - 1s Get Accurate Reasult for Home, Well, Tap Water Quality Test and More!

$379

TDS Meter Water Quality Tester,HASFINE Digital Conductivity Meter 3 in 1 TDS,EC and Temperature Meter, Accuracy Testing Pen 0-9999 PPM Meter for Drinking Water, Aquariums,Pool and More

$182.65

4 in 1 Digital pH Meter for Water, ±0.01 Resolution High Accuracy Tds Meter Digital Water Tester with ATC pH Tester, Water Tester for Drinking Water, Brewing, Hydroponics, Wine, Pool and Aquarium

$189.28

TDS Meter, Electronic Water Tester with 0-9990 PPM Measurement Range, Hand Held Digital Water Test Pen for Farming, Aquariums, Pools, Household Drinking Water (Blue)

$19.99

Craft911 SAFEWATR™ TDS Meter Digital Water Tester - 3 in 1 Accurate Fast TDS, EC, PPM Meter 0-9990 | Water Quality Tester - TDS Water Tester for Drinking, Hydroponics, Aquarium

$29.99

WeAQUA TDS Meter AI-Supported Self-Calibrating for Accurate Results - Total Dissolved Solids Meter- Water Quality Meter Ideal for Drinking Water, Aquariums, Hydroponics, TDS and PPM Measurement

$119.99

Hofun TDS Meter Digital Water Quality Tester, TDS, Temperature & Conductivity Meter 3 in 1, 0-4999 ppm, EC Meter, Digital Water Hardness Testers for Drinking Water, PPM Meter for Hydroponics Aquarium

$130

JiocoVino Digital pH/TDS Meter for Water Quality, Waterproof Water Tester with Backlit Measurement 0-9990pm for Drinking Swimming Pool Hydroponic Aquarium (Milky White, 4 in 1 Water Tester)

$19.99

Hofun High Accuracy TDS Meter Digital Water Tester, Water Quality Tester with True ATC, 3 in 1 TDS, EC & Temp Meter, PPM Water Testing Kits for Drinking Water, Tap, Well, RO/DI System, Hydroponics

$15.57

5 in 1 TDS Meter PH Tester, 0.01 High Accuracy Digital PH Meter for Water, PH/TDS/EC/Salt/Temp Tester, PPM Meter Water Tester for Drinking Water, Hydroponics, Plants, Aquarium and Pool

$12.97

HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout Accuracy (Magnetic Body)

$16.39

Digital pH and TDS Meter Kit - 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy - 3-in-1 TDS EC Temperature Meter for Hydroponics, Household Drinking, and Aquarium (pH Meter Kit)

$89.54

PmoYoKo Digital pH/TDS Meter with ATC pH Tester, 3 in 1 0.01 Resolution High Accuracy pH Pen Tester for Water with LCD Backlit, Tds Meter pH Meter for Drinking Water, Wine, Pool and Aquariums

$10.99

Bluelab METCOM Combo Meter for pH, Temperature, Conductivity (Nutrient) in Water with Easy Calibration, Digital TDS Tester for Hydroponic System and Indoor Plants

$29.9

2024 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temperature(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums, Pool, etc.

$13.49

2024 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temperature(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums, Pool, etc.

$595.9

Water Quality Tester 6-in-1 EC UV275 TOC COD TDS Temperature, Portable Water Quality Meter with Digital Intelligent Scoring for Drinking Water - Well, Tap, Purified, Groundwater, etc.

$15.57

VIVOSUN Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Household Drinking, and Aquarium, UL Certified

$29.99

PmoYoKo Digital pH/TDS Meter with ATC pH Tester, 3 in 1 pH TDS Temp 0.01 Resolution High Accuracy pH Tester with LCD Backlit, TDS Meter pH Meter for Water, Wine, Pool, Hydroponics and Aquariums

$6.99

E ESEASONGEAR - ZW2 TDS Meter, Replacement for Zerowater Water Tester, 0-9990 PPM

$43.99

CIHOPE pH and TDS Meter Combo, Professional pH Meter for Water pH Tester Digital pH Pen, 3-in-1 EC Temperature TDS Meter Digital Water Tester for Drinking Water, Hydroponics, Pool and Aquarium

$42.69

Saltwater Meter Salinity Meter Digital Water Tester Hydrometer Ideal for Hydroponics Aquarium Fish Pond Aquaculture High Accuracy Pen Type Meter Specific Gravity(SG) Salinity and Temperature 3 in 1

$15.16

Saltwater Meter Salinity Meter Digital Water Tester Hydrometer Ideal for Hydroponics Aquarium Fish Pond Aquaculture High Accuracy Pen Type Meter Specific Gravity(SG) Salinity and Temperature 3 in 1

$9.99

HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy

$11.99

Bluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow

$29.9

UIUZMAR Digital pH Meter pH TDS EC Meter for Hydroponic Nutrient Solution pH and EC Meter with LCD Display TDS Water Tester pH PPM Meter for DWC Setup Aeroponic Growing Tent Indoor Plant Grow

$22.79

PH Meter & TDS Meter Digital Water Tester 5 in 1 Salinity Tester PH Temp EC and TDS Meter,PH Meter for Water with LCD Backlit,Water Testing Kits for Drinking Water,Wine,Swimming Pool,Hot Tub Spas.

$59.99

HM Digital TDS-EZ TDS Meter Handheld PPM Tester

$199.73

VIVOSUN PH Meter Digital PH Tester Pen 0.01 High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium, with ATC, Army Green

$95.24

HM Digital ZT-2 Basic TDS Tester, 0-999 ppm Measurement Range , 1 ppm Resolution, +/- 3% Readout Accuracy, Black

$13.7

2024 Newest TDS Meter Digital Water Tester, Lxuemlu Professional 3-in-1 TDS, Temperature and EC Meter with Carrying Case, 0-9999ppm, Ideal ppm Meter for Drinking Water, Aquariums and More

$95.24

Bluelab TRUNV2 Truncheon Nutrient Meter, Digital Conductivity Tester in Water (Scales Include: EC, 500, ppm 700, CF, TDS) Tool for Hydroponic System and Indoor Plant Grow, White

$37.99

Ultra Precise 5-in-1 Pool Salt Tester & pH Meter with Temperature, TDS, EC: High Accuracy Water Analyzer for Pools, Spas, Drinking Water, Aquariums & Hydroponics

$159.5

Bluelab METMULTI Multimedia Meter for Water, Soil, Coco, Rockwool, Rootzone Measurements with Easy Calibration and Leap pH Probe Digital Testing Kit for Hydroponic System and Indoor Plant Grow, Clear

$184.8

Bluelab METCOMPLUS Combo Meter PLUS for pH, Temperature, and Conductivity in Water and Soil with Easy Calibration, Digital Nutrient (TDS) Testing Kit for Hydroponic System and Indoor Plant Grow

$159.5

Digital pH Meter, pH Meter for Water, 0-14 pH Measurement Range pH Tester, 0.01 High Precision Water Quality Tester with ATC for Drinking Water Pool

$29.99

RCYAGO PH Meter, 5 in 1 PH/TDS/EC/Salinity/Temp Meter with ATC, 0.01 Resolution High Accuracy Water Testing for Drinking Water, Hydroponics, Seawater, Aquariums, Fish Tank and Swimming Pools

$10.79

PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium

$22.99

HM Digital COM-80 Electrical Conductivity (EC) and Total Dissolved Solids Hydro Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, 2% Readout Accuracy

$23.02

Bluelab METPULSE Pulse Meter Water 3-in-1 Moisture/Nutrient (TDS)/Temperature Test Kit for Garden Soil, Coco, and Solution, Ester for Hydroponic System and Indoor Plant Grow, Clear

$16.9

GISNPA 7 in 1 pH/TDS/EC/ORP/S.G/Salinity/Temp Meter with ATC pH Tester, 0.01 Resolution High Accuracy Digital pH Meter, Water Tester for Drinking, Hydroponics, Swimming Pool and Aquarium

$29.95

P3 P0550 Water Meter

$49.99

HoneForest Water Quality Tester, Accurate and Reliable, TDS Meter, EC Meter & Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums, etc.

$29.99

HiLetgo TDS Sensor Water Conductivity Sensor Liquid Detection Sensor Water Quality Monitoring Sensor Module TDS Monitor Kit Analog Output

$139.99

Reef Factory TDS Meter Plus

$18.99

YINMIK pH EC Meter for Water Hydroponics, PPM Meter for Nutrients, Measure pH PPM Conductivity Temperature of Hydroponic Garden Water and Nutrient Solution, EC pH TDS Meter for Water, Aquarium, Pool

$42.99

PH Meter, Digital PH Meter, PH Meter for Water, PH Tester 0.01 PH High Accuracy Water Quality Tester with 0-14 PH Measurement Range, PH Meter for Household Drinking Water, Aquarium, Swimming Pool, Spa

$17.19

Pool Salt Tester & PH Meter, Hofun Digital Salinity Meter and PH Tester for Pool Saltwater and Drinking Water, 5 in 1 Salinity PH Temp EC and TDS Meter Swimming Pool Hot Tub Spas, High Accuracy

$24.99

GISNPA PH Meter, 5 in 1 pH/TDS/EC/Salinity/Temp Meter, Waterproof Pool Salt Tester, 0.01 Resolution High Accuracy Water Tester for Drinking Water, Hydroponics, Saltwater Pool, Aquarium, Koi Fish Pond

$91.96

Digital Salinity Tester for Salt Water - Aquarium Salinity Meter with ATC, IP67 Waterproof, 0-200 PPT Large Range Multi-Parameter Tester for Seawater, Fish Tank, Hydroponics

$15.99

CANNABMALL PH Meter, TDS PPM Meter and 3 in 1 Soil Moisture Meter Combo, High Accuracy Lab PH/EC Tester Digital Kit [Upgraded] for Home Water, Hydroponics, Plants Garden Soil and Aquarium PH Pen

$22.79

pH/EC Conductivity Meter with ATC Water Quality Tester 0.0-14.0pH / 0~19.99ms/cm Aquarium, Hydroponics Tool

$199

Digital Salinity Tester for Salt Water,Waterproof IP67 Salinity Meter with ATC,0-200 PPT Large Range Multi Parameter Tester for Seawater, Fish Tank, Hydroponics

$9.59