For use with Aosept Disinfectant and Aosept Lens Cup. The Aodisc Neutralizer is a unique, preservative-free, platinum coated disc that is placed on the stem of the Aosept lens holder for use with Aosept disinfectant. Whey Neutralize the Aosept Disinfectant? The Aodisc Neutralizer turns the Aosept Disinfectant into a gentle, buffered saline.