anthony middleton
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Effect of Human Waste on Soil and it's Inhabitants ?
in Ecology and the Environment
Posted
it is a simple device that i bought very cheap at a DIY store. i dont think it is battery operated , it just simply has two metal prongs which you stick in the ground and a meter which reads the ph.
The two prongs are of different metals. They cause a 'Galvanic' action between them in the presence of moisture in the soil.
The flow of electrons between them causes ionisation which gives the 'Conductivity' of the soil as a pH reading.
http://www.fresh-environment.com
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