... earthquakes etc. travelers, campers, field expeditions, as well every day home use.Technical Data:Model:HF524(4 Filter elements)Filter element ... , Salmonella typhi, Vibrio cholerae, Legionella pneumophila) .· 100% Giardia, Cryptosporidium, and other parasites. · All types of particle contamination down to 0 ... .1 micron.· Chlorine, VOC's, industrial solvents, bad taste and odor. Home use Water dispenser