American Red Cross Ultralight Purifier RCP-MP-E American Red Cross Ultralight Purifier SteriPEN ultra-violet lamp destroys over 99.9% of bacteria, viruses and protozoa American red cross ultralight UV purifier quickly purifies 1.0L of water in only 90 secs Easy to use, one-button operation provides 8, 000 treatments producing up to 8, 000 L of purified water Compact, lightweight at only 2.6 oz American red cross ultralight UV purifier can be recharged using its USB port