my housemate was coughing a lot for no clear reason so i figured i'd buy an air purifier. i found one with a true HEPA filter and good score by that one autistic person who is obsessed with comparing filters of vacuum cleaners, by Levoit

Levoit includes a "Test Report" in their marketing materials by SGS and including their trademarked logo, referring to a specific "SGS ID" of a test, but no details

so obviously i emailed SGS and asked them to confirm whether such a test has been conducted.

i got a response from a Senior Sales Executive in Filtration and he Cc'd three other people in the lab that did the certification asking them to search their archives.

i wonder if i'm the first consumer who bought this device to go and ask this question, and if yes, whether i made their day