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The combined particle and carbon filter for the Blue Pure 511 air purifier delivers comprehensive air cleaning in a single unit. Its particle filter captures airborne pollutants such as pollen, dust, allergens, viruses, and bacteria, while the activated carbon layer targets smoke, odors and gases to keep indoor air fresh. Advanced filtration technology blends electrostatic and mechanical filtering, helping to reduce the energy required to move air through the purifier, enabling high performance at every speed with quieter operation throughout.