A soil tester is a tool used to analyze the composition and quality of soil. It measures various factors such as pH levels, nutrient content, and moisture. This information helps gardeners, farmers, and landscapers understand the health of their soil and make informed decisions about fertilization and planting. Soil testers come in different types, including handheld devices and more advanced electronic models. Some testers provide instant results, while others may require samples to be sent to a laboratory for detailed analysis. Using a soil tester can lead to better crop yields and healthier plants by ensuring the right conditions for growth.