$13.99

Dusson 5-in-1 Soil Tester pH Moisture Light Temp Nutrient Meter Garden Probe 12"

$135.38

Handheld Dissolved Oxygen Meter, Smart DO Meter with Salinity and Altitude Co...

$14.95

2 Pack Plant Water Meter, Soil Moisture Tester Hygrometer Sensor, Soil Water

$12.82

Digital LCD Wood Moisture Meter Detector Tester Wood Firewood Paper Cardboard

$15.99

(40) Soil Test Kit Replacement Capsules pH Test Light NPK Levels Rapitest 1601.9

$79.99

Bluelab PPM Pen Meter -tester blue lab calibration aquarium hydroponics

$79

TESTER WATER PH VOLLARA LIVING ALKALINE WATER - Rechargeable USB 38 LED

$379.05

GOYOJO Water Activity Meter Smart Food Water Activity Tester Moisture Mete Tools

$13.2

Professional Water Tester for Drinking Water - Accurate TDS Meter Digital Wat...

$7.95

100 Soil pH Test Strips Kit Garden Soil Tester for Plants Lawn pH Test

$19.79

VIVOSUN Digital pH Meter, 3-in-1 TDS/EC/Temperature Meter Soil Moisture Combo

$59.99

pH Meter Kit, High Precision Digital pH Pen with ±0.1 pH Accuracy for Water