HM Digital SP-P5 pH Replacement Probe for HydroMaster HM-500 Choose::Single and they are not suitable

and they are not suitable for potable water

5-Gallon Tank is a white UV resistant tank that features a child resistant lid

The Everpure OW2-Plus Filter Cartridge features a quick change system that makes filter changes quick and easy

Max Temperature: 100° F

The FM-15A is NSF International certified

HM Digital SP-P5 pH Replacement Probe for HydroMaster HM-500 Choose::Single and they are not suitableThe HM Digital SP P5 is a replacement pH probe for the HM Digital HydroMaster HM 500. It has an easy assembly, and must be calibrated once new sensor is attached. The HM Digital SP P5 features a glass sensor and resistance tube, and comes with storage solution.