this pH tester is quickly calibrated to an accuracy of much more expensive meters

Check your municipality’s annual water quality report — most are published online and list fluoride levels by district

Ready right out of the box - no priming necessary

Battery Type: 1 x 9V (included)

99% of chlorine

HM Digital PM-1 OEM In-Line TDS Purity Monitor - Alarm Alert for Water Systems 700999872656 this pH tester is quicklyThe PM 1 is an OEM monitor alert sensor for water coolers and other enclosed water purification systems. It is an ideal alert when the filtration system requires service. FEATURES: OEM single line internal TDS monitor that is ideal for enclosed water purification systems. Includes a light and optional alarm that alerts the user service is required when the TDS level reaches the pre programmed set point. User defined set points (any even number between