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

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 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

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

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

Bluelab Conductivity Pen Meter and Probe Care Kit for Conductivity-Water, Temperature and Nutrient Tester (CF, EC, PPM 500/700) with EC Solution and Cleaner for Hydroponics and Indoor Growing

$195.76

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

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

bluelab pH Pen-Digital pH Tester - Reliable & Accurate for High Yield Crops - Hand-Held Meter - Measures pH & Temperature in Solutions and Soil Solutions - Optimize Plant Health & Performance,White

$6.99

AC Infinity pH Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, Nutrient Test pH Meter for Water Hydroponics Plants, Gardening, Aquariums, Swimming Pools

$19.99

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

YINMIK pH EC PPM Monitor for Hydroponics Growing System, Continuous Monitoring TDS Conductivity Temperature of Hydro Nutrient Reservoir Tanks Indoor Vertical Farm DWC Aeroponic Garden for Home Growers

$24.58

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

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

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

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

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

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

Bluelab STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow White

$9.99

4-in-1 Soil Moisture Meter Digital Plant Temperature/Soil Moisture/PH Meter/Sunlight Intensity/Environment Humidity Backlight LCD display Soil Test Meter for Gardening, Farming and Outdoor Plants

$11.04

Bluelab CAREKITPH pH Probe Care Kit with Calibration Supplies, Storage Solution, and Brush, Used for Pen, Meter, Monitor, Controller and Tools for Hydroponic System and Indoor Plant Grow, Clear

$16.9

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

2 in 1 Temperature pH Monitor Meter Tester Sensor Test Kit 0~14 pH Automatic Calibration BNC Electrode Probe for Hydroponic ph Aquarium Meter Water Lab Food Drinking Water pH of Saltwater/Seawater

$19.99

Bluelab PROBPH pH Probe for Water, Replacement Electrode for Meter, Monitor, and Controller with Easy Calibration, Tool for Hydroponic System and Indoor Plant Grow

$88.39

Bluelab CAREKITPHCON Probe Care Kit for pH and Conductivity (TDS) Probes and Pens with 4 Solutions and Cleaners, Cleaning Kit Tool for Hydroponic system and Indoor Plant Grow

$21.41

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

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

$199

VIVOSUN Soil Tester, 3-in-1 Plant Moisture Meter Light and PH Tester for Home, Garden, Lawn, Farm, Indoor and Outdoor Use, Promote Plants Healthy Growth

$20.29

FOLLOWIN pH Up and Down Control Kit (9oz+9oz), Hydroponics pH Tester Calibration Adjuster Buffer Solution Combo for Soil Gardening Plants Pool A Balanced Nutrient

$3.84

GROWIT Soil Moisture Meter for Plants - Accurate & Reliable Plant Moisture Meter for House Plants, Gardening, Farming, Indoor and Outdoor Plants, No Batteries Required

$15.99

LAWNFUL 2-In-1 Digital Soil Meter for Conductivity & Temperature, Professional Soil Themometer EC Meter, Soil Test Kit with LED Display for Gardening, Lawn, Indoor&Outdoor Plant, Potting, Farm (White)

$4.5

Bluelab pH 4.0 & 7.0 Calibration Solution Kit - pH Meter & pH Pen Calibration for Balanced Nutrient Solution NIST Certified | Hydroponics, Gardening & Growing Tents (500 ml/ 16.9 Fl Oz Each)

$8.99

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

Yewhick Digital pH Meter for Food, Food pH Tester with High Accuracy pH Probe for Sourdough and Bread, Food pH Meter for Canning, Meat, Cheese, Solid Samples and Water, 0.01 Resolution

$39.99

GISNPA Digital pH Meter for Food, 0.01 Resolution High Accuracy Food pH Tester with Backlit LCD Display and ATC for Meat, Bread, Canning, Brewing, Cheese, Solid Sampling, Soft Soil and Water

$11.99

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

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

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

Soil Moisture Meter for House Plants, Plant Water Meter,Plant Moisture Meter for House Plants and Outdoor Plants, No Batteries Required (Green)

$22.99

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

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

Sustee Aquameter, Set of 5, Plant Soil Moisture Sensor (Green, Small)

$15.99

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

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

TDS Meter Digital Water Quality Tester for RO-RODI System Drinking Water,Aquariums, Hydroponics,0-9990 ppm Measuring Range,1 ppm Increments,2% Readout Accuracy（Green）

$40.02

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

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

General Hydroponics pH Control Kit for a Balanced Nutrient Solution

$17.26

Suplong Plant Soil Moisture Meter, Precise Moisture Meter for Plants, Plant Moisture Meter for Indoor & Outdoor Plants, Garden, Farm (No Batteries Required)

$12.99

YINMIK Digital pH Tester for Soil, Soil pH Test Kit for Indoor Potted Plants, Professional pH Meter for Soil and Water, Measuring Soil pH for Garden, Grass,Lawn, Greenhouse,Outdoor,Farming, Yard Use

$9.97

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

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

YINMIK pH Meter, Digital pH Tester for Hydroponics, pH Temp Meter with Horizontal Display for Pool, Spa, Hot Tub, Indoor Plants, Koi Ponds, Drinking Water, Wine Beer Making, Aquarium, Aquaculture

$24.69

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

Dr.meter Soil Moisture Meter, 2 Packs Soil Test Kit for Garden Lawn Farm Indoor & Outdoor Use - Soil Tester Hygrometer Sensor for Houseplants - Plant Water Meter-No Battery Needed, Gardening Gifts

$9.99

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

apine Soil Moisture Meter, Plants Moisture Meter, Plant Water Meter for Indoor/Outdoor Plants， Hydrometer for Plants（Green）

$6.59

Sonkir Soil Moisture Meter, 4-in-1 Soil Ph Meter, Soil Tester for Nutrients, Moisture, PH and Light, Soil Ph Test Kits for Plant, Great for Garden, Lawn, Indoor & Outdoor Use (No Battery Required)

$15.99

Raintrip Soil Moisture Meter,Moisture Meter for Plants，Plant Water Meter,Great for Garden, Lawn, Farm, Indoor & Outdoor Use (No Battery Required)

$13.99