HM Digital Hydromaster 100 - Continuous pH/TDS/EC/Temp meter vacuum pump the Bluelab Conductivity Pen is

the Bluelab Conductivity Pen is built to withstand the bumps and splashes of daily use

ornamentals and shade trees - Can be used on edible plants up to the day of harvest - OMRI Listed for organic gardening

Keep the plant’s environment warm and maintain better heat distribution without heat buildup or stress and reduce your energy costs in the process

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HM Digital Hydromaster 100 - Continuous pH/TDS/EC/Temp meter vacuum pump the Bluelab Conductivity Pen isDescription 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 and scientific testing, pools and spas, ecology testing, boilers and cooling towers, water treatment and more. Features Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS),