The first thing I asked myself to build the prototype is "How much dye can create how much volume of color solution water when leakage happens on coated pipe?"

The answer is- Only a small amount of dye is needed to color a large volume of leaking water because many tracer dyes are visible at very low concentrations. For example, high-efficiency fluorescent dyes can be seen in water at about 0.1-1 mg per liter. Meaning 1 gram of dye can color roughly 1,000-10,000 liters of water while food-grade dyes typically color about 50-200 liters per gram. In a building pipeline leak scenario even a small section of coated pipe releasing 2-10 grams of dye could produce enough colored water to make the leak clearly visible as it travels to nearby drains or outlets. This means the coating does not need to dissolve completely because only a small portion must dissolve to create a noticeable color signal for leak detection.