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Bluelab pH Pen-Digital pH Tester - Reliable & Accurate for High Yield Crops

$ 52.8 $ 31.67

Bluelab pH Controller

$ 246.4 $ 147.84

PH Meter for Water Hydroponics Digital PH Tester Pen 0.01Hi-Accuracy Pocket Size

$ 7.91 $ 4.74

RAPITEST 1601 SOIL TEST KIT LAWN FLOWER PLANT TEST GARDEN TESTER pH NPK

$ 14.59 $ 8.75

4 in 1 Tds Meter Digital Water Tester

$ 6.11 $ 3.66

15Pcs PH Meter Buffer Solution Powder for Precise Calibration Easy US Supplies

$ 2.55 $ 1.53

Electric PH Meter Digital LCD Tester Pocket Hydroponics Aquarium Water Test Pen

$ 11.86 $ 7.11

3 in 1 Soil Tester Meter for Garden Lawn Plant Pot Moisture Light Ph Sensor Tool

$ 5.71 $ 3.42

Soil Acidity Meter pH Level Tester Gauge With Probe for Plants Garden Lawn Farm

$ 13.22 $ 7.93

Digital LCD PH Meter Pen TDS EC Water Purity PPM Temperature Tester Tool

$ 7.16 $ 4.29

Compost Soil Thermometer 20 Inch 50 Cm Length Premium Food Grade Stainless Steel

$ 11.08 $ 6.65

Irrometer 200SS-5 Watermark Moisture Sensor, 5ft Leads

$ 35.2 $ 21.12

Nynelly 15 Pack pH Meter Buffer Solution Powder pH 6.86 4.01 9.18 for Precise...

$ 9.46 $ 5.67

Soil Tester Meter 2 in 1 pH and Fertility Analizer Garden Tester Impact-Proof

$ 7.43 $ 4.46

Teros-12

$ 440 $ 264

Soil PH Test Kit Tester 100pcs Litmus Strips PH 0-14 For Testing Soil Water

$ 7.83 $ 4.69

Apera Instruments AI209 PH20 Value Pocket pH Tester Kit

$ 26.39 $ 15.83

VIVOSUN Soil Tester, 3-in-1 Plant Moisture Meter Light and PH Tester

$ 7.91 $ 4.74

HANNA Instruments DiST 4 EC Tester - HI98304 - New in box.

$ 13.2 $ 7.91

Bluelab BP1-1111-0736 pH Pen Used Read*

$ 22 $ 13.2

Bluelab Guardian Monitor; 24/7 monitoring of pH, EC and temperature

$ 158.4 $ 95.04

TDS Meter Digital Tester, Water Quality Testing Kit for Drinking Water, Pools

$ 11.43 $ 6.85

BLUELAB CONDUCTIVITY PEN

$ 22 $ 13.2

Bluelab pH Pen Blue Lab Tested Works Calibration Meter Tested Working Used

$ 44 $ 26.4

2023 15 PACK PH BUFFER SOLUTION POWDER PRECISE CALIBRATION - pH 4.01/6.86/9.18W6

$ 7.03 $ 4.21

Digital Electric PH Meter LCD Tester Pocket Hydroponics Aquarium Water Test Pen

$ 5.88 $ 3.53

AROYA Solus 3 in 1 Soil Moisture Content, EC, Temperature Meter & Spot Sensor

$ 264 $ 158.4

7 in 1 Digital LCD PH/TDS/EC/ORP/TEMP/SG/Salinity Water Quality Tester Meter Pen

$ 17.59 $ 10.55

Probe for Hanna Instruments Waterproof pH EC TDS Temperature Meter

$ 70.4 $ 42.24

3 in1 Soil Tester Water PH Moisture Light Test Meter Kit For Garden Plant Flower

$ 6.15 $ 3.69

Tramex Moisture Meter

$ 83.6 $ 50.16

Digital LCD PH Meter Pen+TDS EC Water Purity PPM Temperature Tester Tool 1PC/2PC

$ 8.26 $ 4.95

5 in 1 LCD Digital PH/TDS/EC/Salinity/Temperature Water Quality Meter Tester Pen

$ 30.92 $ 18.55

7 in 1 Rapid Soil Tester Meter Nitrogen Phosphorus Potassium N P K PH Humidityus

$ 129.36 $ 77.61

Digital PH Meter High Precision LCD Aquarium Water Acid PH Tester Pool Analyzf5

$ 3.74 $ 2.24

6in1 PH Tester Soil Water Moisture Light Test Meter Temperature Humidity Test US

$ 15.25 $ 9.15

3x20ml, Storage + pH 4 + 7 Buffer Calibration/Solution/Fluid/Probe/Sensor/Meter

$ 9.67 $ 5.8

Bluelab Combo Meter Plus - Handheld Digital Hydroponic Nutrient and pH Meter

$ 66 $ 39.6

TDS Meter Digital Tester Water Quality Testing Kits for Drinking Water 0-9990ppm

$ 6.23 $ 3.74

BRAND NEW MILWAUKEE PH600 - Instrument Digital Water PH Meter/Tester L

$ 13.2 $ 7.91

BlueLab Guardian Monitor Connect

$ 96.8 $ 58.08

15 PC PH BUFFER SOLUTION POWDER PRECISE CALIBRATION - pH 4.01 / 6.86 / 9.18 USRw

$ 7.03 $ 4.21

iSpring Digital TDS Meter Home Drinking Tap Water Quality Purity Test Tester PPM

$ 14.2 $ 8.52

10 in 1 Digital Backlight PH/TDS/EC/ORP/TEMP/SG/Salt Water Quality Tester Meter

$ 25.5 $ 15.3

Bluelab Combo Meter for pH, Temperature, and Conductivity

$ 176 $ 105.6

TrolMaster Aqua X Bundle Pack WCS-1, NFS-1, OA6-24, DSP-1

$ 439.99 $ 263.99

Milwaukee MW102 pH Temp Meter

$ 52.79 $ 31.67

Bluelab pH 4.0 & 7.0 Calibration Solution 500 ml duo

$ 30.96 $ 18.58

Kensizer Soil Tester, Soil Moisture/pH Meter, Gardening Farm Lawn Test Kit To...

$ 15.62 $ 9.37

Soil Moisture Meter/Hygrometer Sensor for Plant Care, Great for Potted Plants

$ 7.91 $ 4.74

EcoTester pH1 Digital Waterproof pH Solution Tester Oakton Needs Batteries

$ 16.71 $ 10.02

LCD Digital PH Meter Tester Aquarium Pool Hydroponic Water Test Pen Portable US

$ 6.95 $ 4.17

Farmex MT3 3 Grain Moisture Tester

$ 57.2 $ 34.32

Luster Leaf Rapitest Soil Digital Moisture Meter 1825 Gardening Plant Products

$ 11.29 $ 6.77

Digital LCD PH/TDS/EC/ORP/TEMP/SG/Salinity Water Quality Tester Meter Pen Kits

$ 6.29 $ 3.77

7 in 1 Rapid Soil Tester Meter Nitrogen Phosphorus Potassium N P K PH HumidityyG

$ 135.65 $ 81.39

8 in 1 Digital PH/TDS/EC/ORP/TEMP/S.G/Salinity/H2 Water Quality Tester Meter Pen

$ 20.22 $ 12.13

Bluelab METCOM Combo Meter for Ph, Temperature, Conductivity (Nutrient) in Water

$ 131.99 $ 79.19

Hydroponic Meter PRO Kit, pH Pen with ±0.01 Accuracy & Interchangeable Probe

$ 131.12 $ 78.67

eSeasongear 3000 PPM SOLUTION 230 ml, salt meter calibration, pool & pond water

$ 8.79 $ 5.27

3 in 1 Soil Tester Water PH Moisture Light Test Meter Test Kit For Plant Flower

$ 5.96 $ 3.57

Luster Leaf 1601 Rapitest Test Kit for Soil pH, Nitrogen, Phosphorous and Potash

$ 19.35 $ 11.61

Luster Leaf 1601 Rapitest Test Kit for Soil pH, Nitrogen, Phosphorous and Potash

$ 17.15 $ 10.29

3-In-1 Waterproof Multifunction Digital Meter, Measures Electrical Conductivity

$ 40.47 $ 24.28

Turbidity Meter 0-1100NTU Tap Water Turbidity Meter Tester Sewage Treatment

$ 367.96 $ 220.77

Hydrogrow Design Smart Wifi pH EC Controller with Automated Dual Dosing System

$ 527.12 $ 316.27

4 in 1 PH Tester Soil Water Moisture Light Test Meter for Garden Plant Seeding

$ 7.91 $ 4.74

Trolmaster WCS-1 Water Content Sensor With Cable Indoor Meter 420 Moisture

$ 83.59 $ 50.15

6 In 1 Smart Floating Swimming Pool Water Analyzer PH CL TDS EC ORP TEMP Tester

$ 47.08 $ 28.24

5 in 1 Digital LCD PH/TDS/EC/Salinity/Temperature Water Quality Meter Tester Pen

$ 14.95 $ 8.97

AC Infinity pH Meter Kit, pH Pen Tester for Water AC-PHM3

$ 26.39 $ 15.83

TDS Tester

$ 10.56 $ 6.33

General Hydroponics pH Control Kit for a Balanced Nutrient Solution

$ 20.13 $ 12.08

Bluelab Probe Care Kit - pH Only - cleaning calibration solution sachets

$ 8.79 $ 5.27

7 in 1 Digital PH/TDS/EC/ORP/TEMP/SG/Salinity Water Quality Tester Meter LCD Pen

$ 17.85 $ 10.71

Gouevn Soil Moisture Meter for Plants

$ 7.03 $ 4.21

6-in-1 PH Tester Soil Water Moisture Light Test Meter Temperature Humidity Test

$ 11.69 $ 7.01

Mechanical Hour Meter AC 110V-250V for Small Engines, Boats, Generators and M...

$ 18.04 $ 10.82

PH Meter for Water pH Tester Digital pH Pen, 0.01 High Accuracy pH Reader pH ...

$ 17.59 $ 10.55

Digital PH Meter LCD Tester Hydroponics Industrial Water Quality Monitoring USA

$ 28.76 $ 17.26

6-in-1 PH Tester Soil Water Moisture Light Test Temperature Humidity Meter US

$ 14.88 $ 8.92

Waterguru Sense Smart Pool Monitor

$ 35.2 $ 21.12

4 in 1 PH Tester Soil Water Moisture Light Test Meter for Garden Plant Seeding

$ 8.79 $ 5.27

PH Testing Ph Reader Ph Sensor ATC Ph Meter Digital Ph NumberTesting Pen

$ 6.98 $ 4.19

Kelway Soil Tester pH Meter Acidity Tester Made in Japan By Kel Instruments Co

$ 43.95 $ 26.37

Soil PH Meter 0.0-14.0pH APP Soil Tester Data Logger Temp Acidity Analyzer USA

$ 0.9 $ 0.54

LUSTER LEAF 1845 RAPITEST DIGITAL Soil Plant Garden PH Sensor Meter Tester Test

$ 12.76 $ 7.65

10 in1 Digital LCD PH/TDS/EC/ORP/TEMP/SG/Salinity Water Quality Tester Meter Pen

$ 25.5 $ 15.3

Bluelab pH Controller WIFI Version -Compatible with Edenic -Automatic PH Dosing

$ 338.8 $ 203.28

2x 20ml pH Electrode/Probe Storage Solution, milwaukee/ma9015/hanna/hi70300

$ 5.27 $ 3.16

Handheld Soil PH Tester PH & Moisture Meter With 295mm Long Metal Probe WR

$ 22.98 $ 13.79

Digital Water Quality Tester TDS EC Meter Range 0-9990 A9Z8 B0R0 m2u B1K4

$ 2.77 $ 1.66

VIVOSUN pH and TDS Meter Combo, High Accuracy Pen Type.A9 657

$ 15.83 $ 9.49

DiFluid R2 Extract Coffee TDS Refractometer, Multi-Test Modes & OTA Updates

$ 92.4 $ 55.44

TESTER WATER PH KANGEN ALKALINE ELECTROLYTE LIGHT - BATTERY LED

$ 63.36 $ 38.01

Soil Test Kit Tester pH Test Light NPK Levels Rapitest Ground #1601 (40 Test)

$ 14.38 $ 8.63

4 In 1 LCD Digital Soil Tester PH Water Moisture Temperature Sunlight Plant Test

$ 8.7 $ 5.22

Handheld Water Quality Hardness Purity Digital LCD Meter 0-9990 PPM TDS TDS-3

$ 4.54 $ 2.72

New MOEN Smart Wireless Soil Sensor - WISNS002G1USA

$ 33.44 $ 20.06

Stainless Steel Soil Thermometer 127mm Stem Display 0-100 Degrees Celsius_~~

$ 7.01 $ 4.2