UF Upgrade Kit: If you need biological pure water for RNA or DNA studies, a UV/UF module can be added. If you need water guaranteed to be free of pyrogens for tissue culture, or monoclonal antibodies production, you can add a UF module. UV Upgrade Kit: If you need a low TOC water for your critical HPLC, GC/MS or IC applications a UV module can be added to your infinity base unit of infinity UF system.