Strong Acid Soil Test The basic soil test will normally include: Total Exchange Capacity (T.E.C.) Organic Matter(Humus) as percent Nitrogen (N released from cliloidal humus) Sulfate (Expressed as elemental sulfur) in ppm Phosphates (as P2O5) Olsen Value (Included at no charge if pH is above 7.5) Percent Base Saturation of: Calcium Magnesium Potassium Sodium Other