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

8 in 1 WiFi pH Meter Multi-Parameter Water Monitor pH, Temperature, TDS, EC, Salinity, Specific Gravity, ORP For Aquariums

£97.58

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

£7.24

Garden PH Meter Sunlight 3in1 Soil PH Tester Garden Flowers Soil Moisture Sensor Plants Acidity Humidity PH Monitor Detector

£9.99

50/100PCS Water Quality Test Strip Multipurpose 7 in 1 Aquarium Test Strips Water pH Test Tools for Fish Tank Swimming Pool

£8.72

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

£174.00

Calibration ampoules 95% r.F.

£59.95