This pH meter from Nature measures the acidity of the soil and is designed with a mechanical scale that ranges from 3 to 10. Easy to operate: Insert the probe ¾ into the soil, and you can read the result after about 1 minute.Sophisticated design: The ph measuring tool is embedded with sophisticated algorithms, great for gardening, home and lab research.Practical design: you can take better care of your plants with this soil pH meter. The soil tester helps you diagnose soil conditions so you can give your plants the right amount of water, fertiliser and light and enjoy the pleasure of harvest and lush growth sooner.