Rapitest Soil Testing Kit

This self-contained kit will enable you and your students to quickly assess soil pH and the relative amount of three key elements – nitrogen, phosphorus and potassium (potash). Tests are simple as dropping the contents of a capsule into the sample and comparing the resulting color to a set of standards. The remarkable extensive instructions detail how to conduct the tests, when to conduct the tests, preferred pH ranges for hundreds of plants and how to select and apply the proper fertilizers. Each test can be conducted 10 times. Luster Leaf Products, Inc., No Substitute.