Aquamira Series III Replacement Filter - GRN Line Green. This extremely light weight and packable replacement filter extends your trail or mission for another 50 gallons at less than 1 ounce of added weight. It also reduces waste and added weight. The Frontier Series III GRN Line replacement filter is certified Bacteria Cryptosporidium and Giardia to EPA standards. The Aquamira Frontier PRO also reduces chemicals chlorine bad taste and odors and is certified lead free to NSF/ANSI-372. It installs quickly with just a twist of the wrist for quick and easy use. Technical Information: "The Aquamira Series III GRN Line replacement filter is the heart of the newly redeisgned Frontier Pro. No need to ditch your entire filter system when it recaches the end of it's service life now you can change out filters as needed and carry spares at under an ounce each. The Series III replacement filter improves performace reduces weight and flows better than the previous carbon block version. Frontier GRN Line filtration is achieved using our unique 2 stage Electro-Positive Adsorption Technology. The replaceable pre-filter disk removes larger particles then final charged micro-glass fibers pull organisms as small as bacteria out of the water stream while still maintaining high flow rates and low pressure drops. GRN Line filters have been thoroughly tested and are certified to remove protozoan cysts and bacteria to US EPA standards without the use of disinfecting chemicals such as chlorine bromine or iodine. The Frontier PRO is certified lead free (ANSI/NSF-372) and also reduces chlorine and harmful chemicals bad tastes and odors. You will be amazed that a filter this small can do so much. Certifications by IAPMO R&T - An Authorized EPA NSF/ANSI Certifying Agency " Specifications for Aquamira Series III GRN Line Replacement Filter: Manufacturer: Aquamira Color: Black Application: Survival Fabric/Material: Carbon / Micro glass Weight: 1.7 oz Water Treatment Type: Protozoa Cartridge Life: 50 gallons Field Maintainable: Yes Flow Rate: 500 ml per min Features of Aquamira Series III GRN Line Replacement Filter GRN Line Bacteria Filter with up to 500 ml/minute flow rate Certified filtration for 50 gallons (over 180 L) Ultralight and compact 2.5 oz. (71 g) packable protection Replaceable filter design means highly cost-effective extra capacity capability Connects to bottles bags bladders and gravity systems via UQC quick connects Includes three pre-filters to extend filter life and remove twigs and debris Includes Miraguard Antimicrobial Technology which suppresses the growth of bacteria algae fungus mold and mildew within the filter media Certified lead free (NSF/ANSI-372) BPA free chemical free and iodine free Package Contents: Aquamira Series III GRN Line Replacement Filter Aquamira 67013: Series III Replacement Filter - GRN Line Green