Complied with ANSI/NSF42 requirement Blend Activated Carbon Block for Lead Reduction, Arsenic & Heavy Metals removal. Effective, High Value Adsorbent For Reduction of Heavy Metals Effective to reduce Chlorine, VOCs, Pesticides, Hazardous Chemicals, odor removal and Taste Improvement. Low pressure drop, high dirt holding capacity, durable physical strength, and steady flow to achieve reliable performance & long life usage. Cartridges are manufactured in compliance with NSF and FDA requirement in material and processing. Applications serve residential, commercial & industrial range with standard NPT DOE caps. OEM variety caps designs available upon request.