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 Replacement pH sens PH-200 Replacement Probe (Replacement pH/Temp Sensor for PH-200) Measures pH and Temperature $35.85 $54.95
HM Digital Replacement Probe C COM-300 Replacement Probe Specifications (Replacement pH/EC/TDS/TEMP Sensor for COM-300) Measures pH, Conductivity(EC), TDS, and Temp Measures Temperature Probe: ABS material Stainless steel sensor pins Thermometer: Yes Glass pH sensor with... $40.40 $62.95
HM Digital Replacement TDS/EC HM-500 TDS/EC Replacement Probe Specifications (Replacement EC/TDS sensor for HM-500) Measures Conductivity and TDS Measures Temperature Probe: Heat resistant ABS Material Cable: 78.7? (2m) $28.90 $44.95
HM Digital pH Electrode storag PH-STOR: pH Electrode Storage Solution PH storage solution for HM Digital’s PH-200 / PH-80 as well as other brands of pH meters. Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR... $5.00 $7.95
HM Digital pH 7.0 buffer solut 20 Pack pH 4 Buffer Solution (20) packets of 20 ml pH 4 buffer $15.50 $24.95
HM Digital pH 4.0 buffer solut 20 Pack pH 4 Buffer Solution (20) packets of 20 ml pH 4 buffer $15.50 $24.95
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
