Guaranteed Contents w/w% Nitrogen (N) 22.5 Sulfur Soluble in Water (S) 24.0 pH 0.0 IMPROVE 7 is a water conditioner of pH 0.0 with concentrated acid formulations. It guarantees a high level of safety during handling due to the empty urea with sulfuric acid. It adjusts the water pH and maintains irrigation equipment. IMPROVE 7 is the perfect solution to become a full-strength acid solution.