Usually, thin-walled tube samplers and various piston samplers are applied to collect undisturbed soil specimen. The diameter of the undisturbed soil sample is all-around 100 mm and ranges from 150mm to 200mm for rocks. Accurate and quick soil and liquid pH measurements. Tough with replaceable probes and protecting extras. Handy https://diceq197roj1.kylieblog.com/profile