Also, conventional soil resistivity meters – which work on minimal voltage and higher frequency – are only reliable for electrode spacings up to 15 meters in many soils, and a most of 30 meters. Not following correct sampling and managing procedures can contaminate or change the soil sample, resulting in https://johnathanzjsyh.blogocial.com/top-latest-five-soil-resistivity-testing-solutions-bangladesh-urban-news-68091430