$8.03

4 in 1 Digital Water Tester for Drinking Water - Accurate and Reliable TDS EC

$10.57

Soil Moisture Meter, Plant Water Monitor, Soil Hygrometer Sensor for Plant Care,

$10.45

3 in 1 Digital TDS Meter Water Quality Tester Testing Kits for Drinking Water US

$25.21

Stainless Steel Soil Thermometer by Smart Choice| 127mm Stem, Easy-to-Read 1.5?

$74.06

Hanna Checker pH Tester (HI 98103) Hydroponic Garden Meter

$14.35

GROWIT Plant Moisture Meter - Accurately Tells You When to Water Your Plants ...

$50

OAKTON ECO TESTR TDS Testr 11+ Multi Range Tested Powers On

$58.54

Apera Instruments PH60F-E Probe for PH60F Flat pH Tester, Also with PH60, PH6...

$45.57

EZTOCH pH Meter for Water, Smart pH TDS EC Meter for Water Hydroponic, 4 in 1...

$40.98

High Precision Water Tester for pH, TDS & Temperature with Backlight Feature

$17.2

Soil Ph Paper Test Kit โ€œ 100 Tester Strips 3.59 Range โ€œ Use For Testing G...

$23.41

Max Min Thermometer and Hygrometer - Ideal Greenhouse Bronze Effect