The Midwest GROmaster EC and PH controller are
the first stand-alone units that provide you with continuous in-line monitoring
of the EC and/or PH of your irrigation solution.
The Midwest GROmaster EC and PH controller are
the first stand-alone units that provide you with continuous in-line monitoring
of the EC and/or PH of your irrigation solution.
The units can be connected to an external alarm that will automatically sound if the EC or PH is outside your pre-set limits. They can also be used to activate solenoid valves to dose fertilizer and/or acid to maintain the EC and PH within the desired range, such as for tank filling in a recirculating or hydroponic system.
Readily accessible set screw calibration insures easy 
calibration
and complete accuracy.
These meters are constructed of the finest materials. The control boxes are made of moisture and chemical resistant housing. The electronic components are manufactured specifically for us to our exact specifications. These units are designed to be used in harsh greenhouse and nursery environments.
These units require a 24 volt input (from a transformer).
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