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Membrane Solutions PH Meter Digital PH Tester Pen for hydroponics Aquarium Water

$ 7.81 $ 4.68

TDS/EC/PH/TEMP 4 in 1 LCD Digital Water Quality Monitor Tester Purity Pen Meter

$ 24.91 $ 14.94

PH Meter and TDS Meter Combo-PPM Digital Water Quality Tester-for Drinking Water

$ 2.98 $ 1.78

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

$ 9.67 $ 5.8

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

$ 17.59 $ 10.55

4/3 in 1 PH Tester Soil Water Moisture Light Test Meter for Garden Plant Seeding

$ 7.38 $ 4.42

Combo 2 in 1 Water Quality Tester Digital pH Acidity TDS-3 Portable Meter Temp

$ 14.07 $ 8.44

4 in 1 LCD Digital PH Meter Tester Soil Moisture Temperature Sunlight Tester USA

$ 10.1 $ 6.06

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

$ 10.11 $ 6.06

5in1/4in1/3in1 LCD Soil Meter pH Tester Water Moisture Light Humidity Garden Kit

$ 7.91 $ 4.74

Beckman 390 pH/Temp/mV/ISE Meter P/N: 511213

$ 110 $ 66

Milwaukee Automated Portable pH/Temperature Meter #MW102

$ 114.35 $ 68.61

Hanna Inatruments PH 213 -2.0-16.0 pH Meter w/ HI 1131 Electrode, Probe & Holder

$ 143 $ 85.8

TDS Meter Digital 5in1 LCD Tester Water Purity PPM Filter PH CF Temp Hydroponic

$ 747.99 $ 448.79

bluelab combo meter- Missing PH probe

$ 30.8 $ 18.48

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

$ 12.98 $ 7.78

Clorox Pool&Spa 12104CLX pH Up, 4 lb, 4lb

$ 6.6 $ 3.95

Digital Wood Moisture Meter Mold Detector Tester Firewood Backlit LCD Display

$ 32.55 $ 19.53

pH Tester Digital-High Accuracy pH Meter for Drinking Water Aquarium/Hydroponics

$ 7.87 $ 4.72

Portable Digital Electric PH Meter LCD Tester Hydroponic Aquarium Water Test Pen

$ 7.91 $ 4.74

Hanna Instruments Temperature Meter w/ Multiparameter Probe HI9813-6 -SB3869

$ 145.18 $ 87.1

TDS Meter-Authentic HM Digital TDS-3 TDS/Temperature Meter, ATC, 0-9990 ppm

$ 13.15 $ 7.89

15Pcs PH Meter Buffer Solution Powder For Precise Easy Calibration B5G7

$ 3.27 $ 1.96

1/2x Digital PH Soil Tester Water Moisture Temperature Sunlight Test Meter Plant

$ 8.79 $ 5.27

4 in 1 TDS EC TEMP Meter LCD Digital Water Quality Monitor Tester Purity Pen

$ 17.59 $ 10.55

Bluelab MONGUACONIN Guardian Monitor Connect in-Line

$ 316.8 $ 190.08

National Garden Wholesale EC Shake Nutrient EC Meter~Powered By A Magnet

$ 70.39 $ 42.23

NEW Soil Tester Water Moisture Light Test Meter Kit For Garden Plant Flower US

$ 7.08 $ 4.25

Digital PH Meter Electric LCD Tester Pen High Accuracy Water Quality Test Tool

$ 6.6 $ 3.95

Digital PH TDS Meter PPM Water Quality Pool Aquarium Hydroponic Tester Tool

$ 6.15 $ 3.69

PC101 PH Meter Water Quality PH CL2 Chlorine Tester Level Meter fo Swimming Pool

$ 19.08 $ 11.45

Original Xiaomi MI TDS Tester Digital Water Purity Meter Detection Measurer Pen

$ 10.55 $ 6.33

3 in 1 Digital LCD TDS EC Water Quality Meter Tester Filter Purity Pen Stick PPM

$ 5.28 $ 3.16

PH Tester Range 0.00-14.00 Measureman meter With Digital Display

$ 4.39 $ 2.63

Milwaukee MA9004 pH 4.01 Calibration Solution

$ 17.59 $ 10.55

Sonkir Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool K

$ 10.62 $ 6.37

Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration, Do 1-PACK

$ 70.22 $ 42.13

Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH 0-14.0

$ 48.35 $ 29.01

Milwaukee PRO Digital Monitors MC120 pH Monitor With Mounting Kit

$ 87.12 $ 52.27

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

$ 11.94 $ 7.16

Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit

$ 43.99 $ 26.39

Digital PH Meter + TDS & EC Pen + Soil PH Tester PPM Water Quality Aquarium Tool

$ 14.95 $ 8.97

3 IN 1 LCD Digital PH Meter +TDS & EC Water Quality Tester +Soil Moisture

$ 14.94 $ 8.96

Smart Digital Water Quality Tester TEMP PPM Test Filter Pen TDS EC Purity Meter

$ 7.73 $ 4.64

Digital PH Meter, 0.01 High Accuracy PH Tester with 3 PH Buffer Powders

$ 15.85 $ 9.51

4in1 LCD LED Moisture Sunlight PH Garden Soil Tester Meter Analyzer With battery

$ 14.07 $ 8.44

Top Grade 1 PC Portable Accurate Digital PH Meter Tester Resolution 0.1 pH New

$ 5.42 $ 3.25

Nupla 6894514 Replacement Metal Tip

$ 6.22 $ 3.73

Agua A2o: Fabricada En Ee. Uu., Liquido De Prueba De Ph Del Agua (Wht / 100-...

$ 12.27 $ 7.36

Lab Instrument Digital Acidity pH Meter Tester±0.01pH Accuracy Benchtop PH Meter

$ 61.6 $ 36.96

XLUX Soil Moisture Meter, Plant Water Monitor, Soil Hygrometer Sensor for Indoor

$ 15.31 $ 9.18

Pro pH & Moisture Soil Tester

$ 17.15 $ 10.29

5in1 LCD LED Soil PH Tester Moisture Light Meter Humidity Detector Garden Plant

$ 17.59 $ 10.55

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

$ 15.74 $ 9.44

Irrometer Watermark Soil Moisture Sensor 5FT Water Conserving Monitor Probe

$ 33.88 $ 20.32

VIVOSUN PH and TDS Meter Measure Kit

$ 8.8 $ 5.28

RAPITEST DIGITAL 1605 SOIL TEST KIT LAWN FLOWER PLANT TEST GARDEN TESTER pH NPK

$ 34.27 $ 20.56

3in1 Portable Soil Tester Water Moisture PH Value Meters Test Plant Sunlight US

$ 1.13 $ 0.68

Segomo Tools Soil Moisture Hygrometer Sensor & Reader (for Gardening, Plants, La

$ 12.76 $ 7.66

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

$ 5.28 $ 3.16

1x Digital LCD TDS & EC Meter Tester Pen Monitor Aquarium Pool Hydroponic Water

$ 8.79 $ 5.27

Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Used

$ 30.79 $ 18.47

Digital PH TDS & EC Meter PPM Water Quality Pool Aquarium Hydroponic Tester Tool

$ 7.91 $ 4.74

Industrial pH Meter PH Detector Sensor Analog Sensor 5V f/ Arduino Raspberry Pi

$ 30.75 $ 18.45

Large LCD 4 in 1 PH Tester Soil Water Moisture Light Test Meter Garden Plant NEW

$ 11.94 $ 7.16

A2O Water pH Test Liquid 100-125 test Easy to use squeeze bottle Instruction inc

$ 11.09 $ 6.65

New 5in1 Soil PH Meter Tester Analyzer Detector for Garden Plants Growth Test US

$ 17.59 $ 10.55

5in1 LCD Soil PH Tester Moisture Light Meter Humidity Detector Garden Plant Home

$ 17.59 $ 10.55

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

$ 0.87 $ 0.52

2~Luster Leaf RAPITEST Soil Test KIT 40 pk pH Nitrogen Phosphorus Potassium 1601

$ 26.32 $ 15.79

Digital Water Quality Tester Purity Filter Pen Testing The Soft And Hard Water

$ 7.63 $ 4.58

AM Conservation Group MM071-F Soil Moisture Meter, Green

$ 8.59 $ 5.15

Digital PH Meter LCD Tester Hydroponics Aquarium Water Pocket Test Pen

$ 7.83 $ 4.69

4in1 3in1 LCD Soil Meter pH Tester Water Moisture Tool for Home Garden Seeding

$ 7.91 $ 4.74

1/2/3x 3 in 1 Soil Tester MOISTURE LIGHT pH Meter Kit For Garden Plant Lawn Tool

$ 7.91 $ 4.74

HM Digital TDS-3 TDS Handheld meter Tester + NaCl 342ppm calibration solution

$ 32.55 $ 19.53

LCD Digital PH Soil Tester Water Moisture Temperature Sunlight Test Meter Plant

$ 12.83 $ 7.7

HoldAll Soil Test Kit 40 Tests Brand New 757860

$ 11.43 $ 6.85

3 in 1 Soil Moister Tester Water pH Light Test Meter Kit Gardening Grass Plants

$ 7.52 $ 4.51

Outdoor Camping Wood-burning Stove Backpacking Portable Survival BBQ Panic Stove

$ 15.82 $ 9.49

Milwaukee MA9007 pH 7.01 Calibration Solution

$ 21.99 $ 13.19

Milwaukee MA9010 pH 10.01 Calibration Solution

$ 21.99 $ 13.19

Milwaukee MW301 EC Conductivity Portable Meter/Tester

$ 83.45 $ 50.07

Luster Leaf 1625 Digital Soil Thermometer DIGITAL Soil Plant Garden Meter Test

$ 12.76 $ 7.65

Agilent G4383A 3200P pH Meter with Thermo Orion 9107BN Triode Electrode Low

$ 299.2 $ 179.52

LUSTER LEAF 1618 RAPIDTEST Aluminum Soil Thermometer Plant Meter Tester

$ 8.09 $ 4.85

USED MILWAUKEE'S MW500 LED Economy ORP Meter with Platinum Electrode in Black

$ 76.73 $ 46.04

R166401 Thermo Scientific Orion Star A111 pH Meter

$ 132 $ 79.2

Watermark Digital Soil Moisture Meter

$ 220 $ 132

3- Oaktron pH Meter & probes - Waterproof pHTestr 2 AND Biosystems PHD LITE

$ 88 $ 52.8

Outdoor Camping Wood-burning Stove Backpacking Portable Survival BBQ Panic Stove

$ 16.7 $ 10.02

Pocket Digital Electric PH Meter LCD Water Tester TDS EC Meter Thermometer + Bag

$ 9.4 $ 5.64

Vintage MOISTURE METER For Plants - Metal Probe

$ 15.36 $ 9.21

John Deere Grain Moisture Tester Moisture Chek-Plus - SW08120

$ 241.67 $ 145

John Deere Hay Moisture Tester Handheld with Pistol-Grip - SW16136

$ 182.83 $ 109.7

OAKTON Acorn Series Conductivity Meter Works as it should, great meter!

$ 33.76 $ 20.25

Yueeng Garden Soil pH Test Strips Kit (100 tests)

$ 12.32 $ 7.39

3 Way Soil Meter, pH Meter, 3-in-1 Tester Kit for Moisture, Light & pH, New

$ 8.79 $ 5.27

Milwaukee MW101 ph Meter, High Accuracy, 2 Point Calibration

$ 92.4 $ 55.44

Bluelab PENGTB Grower's Toolbox with pH Pen, Conductivity Pen and Probe Care

$ 204.5 $ 122.7