HM Digital Pen style TDS/Temp TDS-3: Handheld TDS Meter with Carrying Case With its rugged design and build, the TDS-3 is an ideal meter (tool) that can be used for any application; Ranging from water purification, to hydroponics to industrial waste water treatment. It comes with... $13.00 $19.95
HM Digital Pen style pH/Temp m PH-80: pH HydroTester Series The PH-80 has proven to be the MOST reliable pH meter in its price range. It has become a favorite in such applications as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and... $26.95 $49.95
HM Digital Hydromaster 500 - C HM-500 HydroMaster: EC/TDS, pH, Temp Continuous Monitor The HM-500 is the most versatile continuous monitor indicating EC/TDS, pH, and Temp providing accurate, stable readings the user can rely on. With its rechargeable battery this unit is portable... $214.50 $359.95
HM Digital Hydromaster Portabl HM-200: Portable pH/EC/TDS/Temp Monitor The HM-200 is a versatile portable pH/EC/TDS/Temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs &... $162.00 $274.95
HM Digital Hydromaster 100 - C HM-100: Continuous pH/EC/TDS/Temp Monitor The HM-100 is a pH/EC/TDS/Temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing,... $169.00 $289.95
HM Digital Pen style TDS/EC/Te COM-80: EC/TDS HydroTester Series The COM-80 is easily the most advanced economically priced, reliable EC/TDS meter on the market. With its versatility and durability, it is ideal for testing applications such as hydroponics & gardening, pools &... $24.76 $39.95
HM Digital Waterproof Professi COM-300L: Waterproof Professional Series pH/EC/TDS/Temp Meter The COM-300L is a professional grade level pH/EC/TDS/Temp meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture,... $127.70 $189.95
HM Digital Pro Series Pen styl PH-200: Waterproof Professional Series pH/Temp Meter The PH-200 is a professional grade pH/Temp meter ideal for all pH testing water. With its advanced microprocessor it provides highly accurate dependable readings in such applications as... $63.00 $99.95
HM Digital AquaPro TDS/Temp me AP-1: AquaPro Water Quality Tester (TDS) HM Digital’s AquaPro Series, is a handheld water quality tester which, with a modern design is perfect for today’s tech-savvy and health-conscience consumer. The AquaPro digital water testers are the next... $17.88 $29.95
