NK 25-0-5 fertilizer has a white crystalline structure and contains 25% (+/- 0.25) total nitrogen (N) and 5% (+/- 0.25) potassium oxide (K₂O). The maximum moisture content is 0.6%. The product, with a pH value between 5 and 6, has a particle size range of 1 mm to 0.1 mm and a fineness of 97.5%. Fertilizer should be stored in dry and cool environments to maintain its quality and effectiveness.