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Electrolux Oxygen Ultra EL500AZ air purifier

This portable air purifier from Electrolux is primarily filter-based and has a filter indicator, remote control, and dirt sensor, and 4 speeds. It's designed for floor or tabletop use in a large room. and weighs 19 pounds.

About

Overall score for the Electrolux EL500AZ is mainly how well the model removed dust and smoke from a test chamber, plus quietness for room purifiers.
Dust/pollen/smoke removal: How well models cleared air of fine clay dust and cigarette smoke; performance of portables is at their highest and lowest speeds. Ones that scored well for dust removal should perform comparably for pollen.
Noise: Based on instrument measurements with a portable model running at its highest and lowest speeds.