MinusA2 Filter Kit Filter Kit Includes: 1. Medium Filter Traps and reduces airborne particles larger than 1 micron in size, such as pollen, mold, and pet dander. 2. BioGS HEPA Filter Traps allergen and particles 0.3 microns in size at 99.97% efficiency, and reduces common allergens to support optimum filter efficiency and prolong filter life. 3. Customized Filter Choose from a variety of customized filters including Germ Defense, Pet Allergy, Odor Remover, or Toxin Absorber. 4. Charcoal-Based Activated Carbon Filter Made of high-grade granular activated carbon, our AC filter is much more effective than typical AC filters, which are coated with a thin layer of activated carbon. Chemicals and common household odors can be effectively reduced. HEPA is the most trusted filtration technology in the world, used by hospitals, high-tech clean rooms, and scientific laboratories. Our advanced BioGS HEPA filtration system is true-HEPA rated. It builds and improves on the traditional HEPA; composed of proprietary fiber material, it traps allergens and particles 0.3 microns in size at 99.97% efficiency and particles less than 0.1 microns in size at higher than 99% efficiency3. Our BioGS HEPA filters traps and reduces common allergens1 and bacteria2 trapped on the filter to support optimum filter efficiency and prolong filter life. Unlike traditional HEPA filters which could allow bacteria and viruses to grow over time. † Photo illustration only and do not represent actual filter performance 1Test samples: mite allergen (Der f2), cedar pollen allergen (Cry j1), 4 types of mixed spores (Penicillium citrinum, Chaetomium globosum, Myrothecium verrucaria), Cat allergen (fel d1) 2Test samples: type A influenza virus(H1N1), Escherichia Coli, Staphyllococcus aureus 3Test data shows our HEPA filter (brand new or like-new) can trap particles 0.3 microns in size at 99.97% efficiency. Research data shows True HEPA-rated filters can trap particles less than 0.1 microns in size at higher than 99% efficiency. Charcoal Based Activated Carbon Filter Activated carbon is produced from carbonaceous sources such as: NutshellsCoconut HuskWoodCoal Our Activated Carbon is highly effective due to its natural ingredients, including coal and coconut shell. What do these materials have to do with filtration? high carbon content allows for thorough adsorption of contaminantsdurability provides everlasting coverageabundant natural carbon and micropores adsorb even the smallest impurities Activated carbon is porous which means it has a large internal surface area. Impurities bond to pores of activated carbon via electrostatic attraction or chemisorption. Once the bonding sites are full, no additional impurities can be trapped. We use a raw material carbon base with a high carbon content, for optimal odor and chemical adsorption. Customized Filter Choices Toxin Absorber Traps and reduces volatile organic compounds (VOCs) and other chemicals Pet Allergy Traps and reduces pet dander and pet allergens Germ Defense Effectively traps and reduces airborne bacteria, mold spores and particles that carry viruses Odor Remover Traps and reduces odors from pets, cigarettes and cigars, cooking and mildew Compatible with MinusA2 700A, 780A and 780N Filter Kit Includes: Medium FilterBioGS HEPA FilterCustomized FilterCharcoal Based Activated Carbon Filter