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
HM Digital TDS 1000 ppm calibr 20 Pack Sodium Chloride(NaCl) EC/TDS Calibration Solution (20) packets of 20 ml 1000ppm / 2mS / 2000 µS solution $15.50 $24.95
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 20 pack mix of 1000 20 Pack Assorted Solutions (5) 20 ml packets pH 4 buffer (5) 20 ml packets pH 7 buffer (5) 20 ml packets pH storage solution (5) 20 ml packets EC/TDS calibration solution $15.04 $24.95
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
