Add to Cart Quick view Chemtrol Programmable Controller - PC3000 Chemtrol MSRP: $11,150.57 Was: Chemtrol Programmable Controller offers complete chemical automation (ORP, PPM, and pH) plus control of conductivity or TDS, water balance with Langelier Index, temperature and heater control. It is... MSRP: $11,150.57 Was: Add to Cart Quick view