TrolMaster’s new PPH-3 pH probe has been improved in multiple ways. The new PPH-3 features a reduced diameter protective sleeve and a threaded body that allows the probe to be installed in standard 3/4″ PVC T-fittings. The PPH-3 has an improved sensing element for more stable and reliable performance. It can be used with either the AMP-2 or AMP-3 nutrient sensor module.