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not sure we don't have a way to test but it seems to help my wife's breathing
Sorry, there was a problem. Please try again later.Hi there, this is Krystal with Dyson. Thank you for your interest in the Dyson Pure Cool Link air purifier. The Dyson purifier is designed to capture 99.97% of allergens and pollutants as small as 0.3 microns. This includes dust. Best Wishes, Krystal Dyson Customer Service
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