Description from Basic Science Supplies
Soil Test Kit, 200 Tests, pH, N, P, K
A Soil testing kit for field or classroom use. Allows low cost testing for soil pH, as well as Nitrogen, phosphorus and Potash content. Packed in a sturdy plastic carrying case. Includes complete instructions and recommendations to amend soils based on test results. Contains liquid reagents and equipment for 200 total tests. 50 each for pH, N, P, K.