Quick view HM Digital HM Digital PPH-1000: Single Line pH and Temp Controller MSRP: $14,518.40 PPH-1000: Single Line pH and Temp Controller This new offering from HM Digital gives the user a single-line pH controller ideal for any industrial or commercial systems needing to control pH... MSRP: $14,518.40 Add to Cart The item has been added Add to Wish list