Soil Testing Kit

Tests for nitrate nitrogen, potassium, phosphorus, magnesium, manganese, aluminum, sulfates, ammonia nitrogen, nitrate, nitrogen, chlorides, ferric iron, calcium, humus, and pH. Contains solutions and equipment for 50 tests for each element and 100 tests for pH. Results: ppm. Major element qualitative tests can be performed on green plant tissue for nitrogen, phosphorous, and potassium. Complete instructions included.