Abstract: A highly sensitive method that utilizes a Paper Analytical Device (PAD) which measures part per million (ppm) levels of iodate iodometric titration is provided. The PAD quantifies concentrations of 0.6-15 parts per million (ppm) of iodine. The PAD has at least 12 reaction zones that contain dried reagents thereon and at least one electronically readable information zone. Salt and water are mixed and drops are placed onto 12 reaction zones that contain the loaded dry reagents. The PAD is shaken and the reaction zones turn blue if a preset iodate concentration has been exceeded. Test results are analyzed by comparing the PAD or an image of the PAD with standards, either by eye or with image analysis software to measure the color intensities which are compared to a calibration curve to quantify the iodate levels. The image analysis quantifies iodine with an average absolute accuracy and precision of 0.9 ppm over a range of 0.6-15 ppm.