Luster Leaf Rapitest - Probador de Suelos, Kit para Pruebas de Tierra para pH, N, P y K, Soil Test Kit for pH, N, P and K, 1-Paquete.Quick, at home results for Soil pH, Nitrogen, Phosphrous and PotashInnovative and inexpensive soil test kit features an easy-to-use capsule system and patented color comparatorsContains all components needed for 40 tests. 10 for each of pH, N, P and KSimple, detailed instructions included. Great for beginners and experienced gardeners alike.Soil pH preference list for over 450 plants included