This amazing 4 in 1 Tester is the perfect choice for any gardener or plant enthusiast from the novice to the professional. This Tester is also ideal for students conducting science experiments involving plant growth and behavior. The tester is only 7 long, which makes it easy to carry and store and is great for testing everything from household plants to a full size outdoor garden. The tester is ready to use, no batteries needed, has an easy front slide switch to change between the 4 testing modes. The 4 in 1 Tester Analyzes: * Available sunlight reaching your plants* Soil Moisture Levels* Soil Fertility Levels (Combined nitrogen, phosphorus & potash levels)* Soil Alkalinity/ Acidity (PH) Levels Every plant, flower, shrub has their own ideal growing conditions. With the help of this tester you can easily and instantly measure what your current soil levels are and compare them to what you need to help your item grow and flourish. Also included with the new 4 in 1 Tester is complete easy to follow instructions on how to adjust your soil levels to help promote proper and sustainable growth and life for your flowers and gardens.