Luster Leaf Rapitest pH Meter Soil Tester allows you to instantly test your soil's acidity or alkalinity using a simple probe. This handy tool helps you determine plants suited for your soil and guidance on how to adjust soil conditions for optimal plant health. Included with the tester is a comprehensive plant care booklet featuring pH levels for over 400 plants, making it easier than ever to care for your garden. The device requires no batteries, ensuring hassle- use whe you need it. Crafted from durable plastic and conveniently packaged, the Rapitest pH Meter Soil Tester is an essential tool for gardeners seeking to maintain healthy soil and vibrant plants. Model Number: 1840