seerin- N.P.K (30:10:10) is an main supplement to soil fertilization at growth stage when high levels of phosphorus and potassium and nitrogen are required. the three most important nutrients, without any one of which plants could not survive, are referred to as the primary macronutrients: Nitrogen (N), Phosphorus (P), and Potassium (K).
| Specification | Grade |
| Moisture % Maximum | 1.5 |
| Total Nitrogen % Maximum | 30.0 |
| Total water soluble phosphate % | 10.0 |
| Total water soluble Potash % | 10.0 |
| Boron as (B) % by weight ,Minimum | 0.5 |
| Sulphur as (S) % , Minimum | 3.0 |
| Matter Insoluble in water % | 0.5 |
| Sodium as NaCl % ,Maximum | 0.5 |
| Total Chloride, % Maximum | 0.5 |
| Lead as (pb) ,% Maximum | 0.003 |
| Cadmium as (Cd), % Maximum | 0.0025 |
| Arsenic as ( As),% Maximum | 0.01 |
| Additional trace elements | 1.0 |