Bluelab EC Pen - Conductivity Pen DUCTING_8"X6M Use Shooting Powder at the

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90 degree lens thereby to penetrate the depth of water

Bluelab EC Pen - Conductivity Pen DUCTING_8"X6M Use Shooting Powder at theBluelab EC Pen Conductivity Pen The Bluelab Conductivity Pen (formerly EC Pen) is the ultimate handy solution for measuring conductivity and temperature. Using the same technology that made the bought the Bluelab Truncheon into worldwide fame, the EC Pen is quick and seriously reliable. The EC Pen demonstrates the conductivity (TDS PPM EC CF) of your aqueous solution to ensure that your crop is receiving the right amount of nutrition. Like humans,