The AMERZINE Corrosion Inhibitor Ampoule Test Kit provides a safe, simple, and accurate method for determining the hydrazine level in boiler water. Each self-filling ampoule is immersed in a boiler water sample and the tip is snapped off, the correct volume of sample is automatically drawn in, and a small inert gas bubble forms. The sample and reagent are mixed by tilting the ampoule so the bubble travels from end to end. The resulting color is quantified by placing the filled test ampoule in the center of the cylindrical comparator and comparing with the eight color standards around it.