NNL seeks to develop a high-temperature cation exchange media with improved thermal stability for operation at or above 250°F, a total mixed bed capacity exceeding 0.8 meq/mL, and low solubility in dilute alkaline solutions. Offerings must describe the property changes or new materials proposed to meet these requirements. Selected materials will undergo testing for capacity, solubility, and integrity under various temperatures and durations. A Q&A period will be held over the next four weeks.