Hanna GroLine Direct Soil EC Tester Pen Elite 91 Compact and lightweight design

Compact and lightweight design

A Cation Exchange enhancer that gives you bigger leaves and fatter stems

Perfect for checking your garden without interruption of the photoperiod

The specially deployed GC-3K full phase spectrum fills the lack of the main photoreceptors and pigments outside the 660-450nm range

Hanna GroLine Direct Soil EC Tester Pen Elite 91 Compact and lightweight designThe HI98331 Soil Test is a pocket tester specifically designed to directly measure soil conductivity (EC) and temperature. With a compact size, single button operation, and automatic calibration, Soil Test is an excellent choice for taking direct conductivity measurements in soil. No need for soil slurries with the steel penetration electrode. Integrated temperature sensor for automatic temperature compensation. Great for environmental and