The CULLIGAN® Arsenic Filter, Model AS3, is a water arsenic filter specifically designed for use with Aquasential RO® and Aquasential® systems. Made by the trusted brand Culligan®, this filter effectively removes arsenic from your water, ensuring you have clean and safe drinking water. With a pack containing 1 filter, this Stage 3 filter is compatible with both Aquasential RO® and Aquasential® systems, providing a reliable solution for your water purification needs.