Digital Soil Test Kit

The Luster Leaf® Rapitest® Digital Soil Test Kit gives you a complete NPK and pH picture of your soil in one session — testing nitrogen, phosphorus, potassium, and pH simultaneously using a color-coded four-tube system with an optical calibration reader that digitally recognizes the specific hue produced by each test. More comprehensive than a single-factor meter, and more precise than visual color-chart interpretation. Results come with guidelines for fertilizing and amending your soil based on what you actually find. Everything included — tubes, capsules, dropper, tube holder, and instruction booklet.