Frequently, skinny-walled tube samplers and various piston samplers are used to gather undisturbed soil specimen. The diameter in the undisturbed soil sample is around 100 mm and ranges from 150mm to 200mm for rocks. 【LCD backlight & Temperature checking】Soil pH examination package has a Liquid crystal display backlit screen, which https://ambrosed813jkl7.nico-wiki.com/user