Usually, skinny-walled tube samplers and many piston samplers are used to collect undisturbed soil specimen. The diameter on the undisturbed soil sample is all-around 100 mm and ranges from 150mm to 200mm for rocks. Accurate and swift soil and liquid pH measurements. Resilient with replaceable probes and protecting accessories. Easy https://rolimk024kll7.bcbloggers.com/profile