Hanna Instruments HALO2 GroLine Wireless pH Tester for Soil HI9810302 ph These expanded shell pellets form

These expanded shell pellets form a porous growing medium averaging 8-16 mm in diameter

Young plants

Using a Hanna calibration sachet ensures your buffer is always fresh

Pre-dibbled seed holes are uniform in depth and spacing

and even powder samples

Hanna Instruments HALO2 GroLine Wireless pH Tester for Soil HI9810302 ph These expanded shell pellets formThe HALO2 GroLine Wireless pH Tester (HI9810302) is designed to bring simplicity to pH testing of soil for environmental and agricultural purposes. Open source Bluetooth allows easy integration into current data logging systems IP65 water resistant protection Specialized electrode for spot checking the pH of soil and soil slurries Equipped with everything you need for successful testing right out of the box Universal Connectivity The open source