The MI528-25 Iron Powder reagent kit offers high-quality, ready-to-use reagents compatible with Milwaukee's MW14 meter. It employs an adaptation of the USEPA Method Phenatroline 315B. When iron reacts with the reagent, it produces an orange tint in the sample. After adding the reagent and waiting for the reaction, the photometer calculates the concentration based on the color change. These reagents are specifically designed for samples expected to fall within the range of 0.00 to 5.00 ppm (mg/L).