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PH Meter+TDS Tester Digital Hydroponic Water Monitor 0-9999 PPM Aquarium Pool

$ 6.15 $ 3.69

Digital PH Meter LCD Tester Hydroponics Industrial Water Quality Monitoring USA

$ 28.76 $ 17.26

Hanna GroLine Waterproof EC/TDS PPM Tester New

$ 52.8 $ 31.67

*UNTESTED PARTS* WaterGuru Sense Smart Pool Monitor WGSENSE S1

$ 35.19 $ 21.11

VegTrug Soil Tester, Smart Plant Monitor Bluetooth 4 in 1 Large Size Veg Trug

$ 13.78 $ 8.27

MKKENLEY 3 in 1 Soil Tester, Soil PH Tester, Soil PH Meter, For plant, Garden

$ 1.75 $ 1.05

2 in1 PH Tester Soil Water Acidity Meter Analyzer With 3 Probes For Garden

$ 6.96 $ 4.17

RAPITEST 1840 pH WITH CORD SOIL LAWN FLOWER PLANT TEST METER GARDEN TESTER

$ 17.57 $ 10.54

RAPITEST 1663 PREMIUM SOIL TEST KIT LAWN FLOWER PLANT TEST GARDEN TESTER pH NPK

$ 29.03 $ 17.41

100x Professional 0-14 PH Test Strips Paper Kit for Testing Soil Home Garden

$ 6.23 $ 3.73

Ground Probe Rod Soil Locating Detector Adjustable Handle Stainless Steel

$ 25.56 $ 15.33

WaterGuru Sense Smart Pool Monitoring System Chlorine & pH Pool COMPLETE SET

$ 52.76 $ 31.65

Digital PH Meter Tester 0.1 Accuracy PH Meter for Water etc. Portable PH Meter

$ 4.72 $ 2.83

Digital PH Meter, 0.01 Resolution PH Meter Accuracy Water Quality Tester

$ 10.54 $ 6.32

"John Deere 20"" Portable Hay Tester - SW007320"

$ 238.58 $ 143.15

PH Meter High Precision Desktop PH Meter With Temperature Compensation PHS-3DW

$ 167.2 $ 100.32

Irrometer Tensiometer Low Tension Series - Meter for Monitoring Soil Moisture

$ 125.92 $ 75.55

2in1 Water Quality PH&CL2 Chlorine Tester Level Meter For Swimming Pool Spa Tub

$ 53.76 $ 32.26

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

$ 134.33 $ 80.59

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

$ 133.33 $ 80

8-in-1 pH Tester TDS PPM EC Salinity ORP H2 Temp Meter Digital Pool Tester Lab

$ 18.9 $ 11.34

New HM Digital TDS-EZ PPM Meter/Tester - Water Quality Test - TDS Monitor

$ 14.95 $ 8.97

HM Digital PH-80S Handheld LCD Hydrotester Water Temperature & Quality Tester

$ 23.75 $ 14.25

apine Soil Moisture Meter, Plants Moisture Meter,Plant Water Meter for

$ 7.85 $ 4.71

VIVOSUN Ph and TDS Meter Combo, 0.05Ph High Accuracy Pen Type Ph Meter ± 2%

$ 12.1 $ 7.26

pH meter calibration solution 4.01/6.86/9.18. Standard NIST Buffers (8oz/240mL)

$ 12.23 $ 7.33

Extech PH100 ExStik pH Waterproof Meter

$ 44 $ 26.4

Milwaukee MW102-FOOD PRO+ 2-in-1 pH & Temperature Meter for Food with Hard case

$ 271.04 $ 162.62

Measure Soil Moisture Temperature Humidity PH NPK 4-20mA 0-5V RS485 Soil Sensor

$ 85.1 $ 51.06

7 in 1 Rapid Soil Tester Meter Nitrogen Phosphorus Potassium N P K PH Humidityo7

$ 135.65 $ 81.39

BLUELAB PH PEN

$ 26.39 $ 15.83

Lot Of 2 ResMed Apnealink Units - As Is - For Parts - Untested

$ 237.6 $ 142.56

SRT Replacement Tip Irrometer Soil Moisture Tensiometer SR Meter Sensor Probe

$ 11.44 $ 6.86

Bluelab pH Pen

$ 61.6 $ 36.96

Soil Moisture Meter, Plant Water Meter Indoor & Outdoor,Sensor Hygrometer Srm

$ 5.49 $ 3.29

New & Sealed General Tools MMD4E Pin Type Digital Moisture Meter

$ 21.99 $ 13.19

2xPH Meter Digital PH Tester0-14PH for Drinking Water,Food,Brewing,Pool,Aquarium

$ 15.83 $ 9.49

Aicevoos 1 AS-PH3 Soil Moisture/Temperature/PH Tester

$ 13.19 $ 7.91

RAPITEST 3 in 1 DIGITAL pH, FERTILITY, THERMOMETER SOIL GARDEN PLANT TEST TESTER

$ 24.63 $ 14.77

VIVOSUN TDS Tester 3-in-1 TDS EC & Temperature Meter Digital Water Quality TDS

$ 12.31 $ 7.38

pH and TDS Meter Combo

$ 14.07 $ 8.44

3in1 Guardian Monitor pH Temp EC Conductivity Meter Hydroponic Blue Lab WIFI New

$ 81.19 $ 48.71

Digital Soil Moisture Meter Analyzer Pin Type Soil Moisture Tester with 0 to 80%

$ 174.24 $ 104.54

High Precision PH-meter Multi-parameter Water Quality Monitor w Mounting Bracket

$ 110 $ 66

Rotronic HC2-AW-USB WATER ACTIVITY PROBE

$ 748 $ 448.8

Upgraded PH TDS Meter Combo Water Tester Kits for Drinking Water Aquarium Pool

$ 8.79 $ 5.27

Bluelab Conductivity Pen PPM EC TDS Hydroponic Meter Aquarium Calibration Water

$ 52.35 $ 31.41

Milwaukee PH600 Pocket-size pH Tester

$ 25.71 $ 15.42

5in1 LCD Soil PH Tester Water Moisture Light Test Meter for Garden Plant Seeding

$ 15.35 $ 9.21

Pinless Wood Moisture Meter Wall Humidity Tester Hygrometer Timber Damp Detector

$ 24.41 $ 14.64

Moisture Meter Moisture Content Monitor For Soil Silver sand Coal powder

$ 136.22 $ 81.73

Poratble Paper Moisture Meter Digital Carton Moisture Tester Testing Equipment

$ 110 $ 66

Dickey-John 250g Grain Moisture Tester, Semi-Portable, GAC500XTSG1

$ 1884.96 $ 1130.97

Milwaukee pH51 Waterproof pH Tester with Replaceable Probe

$ 33.44 $ 20.06

Apera Instruments Value Series Ph20 Waterproof Ph Tester Kit Auto Calibration

$ 21.99 $ 13.19

FEBTECH-Metal Soil Probe Rod-Insulated Septic Tank Probe-36-Inch Long Overall

$ 41.35 $ 24.81

Soil Sample Probe 12 Inch with T Handle, Soil Sampler Tool, Soil Test Kit, Soil

$ 19.26 $ 11.55

Milwaukee M10000 Electrode Rinse Solution Sachet

$ 8.79 $ 5.27

Oakton Wd-35462-11 Multiparameter Meter,Ip677 Waterproof

$ 89.75 $ 53.85