Hanna GroLine Direct Soil EC Tester Pen Elite 91 The specially deployed GC-3K full

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

The filter screw mount is a 37mm aluminum alloy ring and can be removed and adapted for security cameras

±(50ppm + 3%MV)

• Convenient to use: easy-to-use liquid concentrate

Perfect for checking your garden without interruption of the photoperiod

Hanna GroLine Direct Soil EC Tester Pen Elite 91 The specially deployed GC-3K fullThe 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