QC-1: Quick Check TDS/Conductivity Monitor Press the "Push-to-Check" button for an instant water quality check!

PS-202: Dual Display TDS Controller The PS-202 allows for continuous and simultaneous monitoring and control of TDS levels on two water lines.

PS-200: Dual TDS Controller Install the Dual TDS Controller to constantly monitor TDS levels of water produced by a high-output system. Immediately know if the TDS levels rise above an acceptable level.

PS-100: Panel Mount TDS Controller Install the Panel Mount Controller to constantly monitor TDS levels of water produced by a high-output system.

PM-2: External In-Line TDS Purity Monitor An ideal monitor/alert for water coolers and other enclosed water purification systems. Alerts a user when the filtration system requires service.

pH Buffer Solution Variety Pack PH-BUF HM Digital's pH buffer solution comes in powder form, so it's lightweight, takes up very little space, is inexpensive and has an indefinite shelf life.

ORP-BUF / HM DIGITAL น้ำยามาตรฐานโออาร์พี ORP Buffer Solution and Electrode Test Kit