PH Buffer Powder Calibration Set PH4.01 PH6.86 PH9.18 ORP 256MV KCL Solution Powder For PH Meter Tester Aquarium Hydroponics

5 in 1 PH Test Strips Multipurpose SPA Swimming Pool Water Tester Paper Hardness Tool Bottled 50pcs

£7.23

NT Labs Aquarium Narrow pH Test

£6.99

3 in 1 PH Meter Soil Moisture Meter Sensor Fertility Test Tool For Indoor/Outdoor Gardening Plant Moisture/Fertility/PH Testing

£15.17

Bluelab pH Controller Connect

£519.95

IBS Scherer pH value < 11.5, pH value < 11.5, 20 l canister

£174.00

4-in-1 Plant Soil Tester Kit with pH Light Moisture Acidity Meter for Flowers - Comprehensive Garden Care Tool

£13.61