Fertilizer is a substance added to soil to improve plants' growth and yield. First used by ancient farmers, fertilizer technologies developed significantly as the chemical needs of growing plants were discovered. Modern synthetic fertilizers are composed mainly of nitrogen, phosphorous, and potassium compounds with secondary nutrients added. The use of synthetic fertilizers has significantly improved the quality and quantity of the food available today, although environmentalists debate their long-term use.  read more>>

pH Value Specific Gravity Purity  Volatile Matter  Moisture  Density  Trace Metal  Solubility  Acidity  Alkalinity  Available Chlorine Ion Exchange Capacity Total Nitrogen

Nitrate Nitrogen  Ammonical Nitrogen  Total Phosphate  Water Soluble Phosphates  Sieve Analysis  MeltingPoint  Chlorides Sulfates  Fluorides  Nitrates  Cyanide  Heavy Metals, elements, Fe, Cu, Mn, Zn, Pb, Cr, CO, Ni, Mg, B, Mo, V