ADWA AD12 | Waterproof PH Meter and High Precision Temperature Tester | Professional PH Meter | Drinks | Drinking Water | Pool | SPA | Aquarium | Hydroponics | Calibration Solutions Included : Amazon.co.uk: Garden
ADWA AD11 – AD12 – AD14 Professional Waterproof pH – ORP – Temperature Pocket pH meter Tester with Replaceable probe - HaiOu Saintifik