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Was by south korea's dynair and this one caught my eye because it used ultraviolet uvc to kill airborne viruses. it's very appropriate in these times. the machine has an automatic mode and built—in sensors. so when it detects a lot of dust in the air, the light turns red and the fan kicks in, which it did as soon as i got up in the morning and kicked up a load of dust. here's the air quality data from monday with no intervention. and here's tuesday when i was running the dynair filterfor 2a hours. once again, it brought the air quality index all the way down to zero with no dust detected. an...

The tcl filter got the air quality index all the way down to zero again and for a low—cost device, i thought that was pretty impressive. the second filter i tried was by south korea's dynair and this one caught my eye because it used ultraviolet uvc to kill airborne viruses. it's very appropriate in these times. the machine has an automatic mode and built—in sensors. so when it detects a lot of dust in the air, the light turns red and the fan kicks in, which it did as soon as i got up in the morning and kicked up a load of dust. here's the air quality data from monday with no intervention....

Of dust again when i got changed in the morning. later in the day when i had a nap and again wasn't moving around the room, the tcl filter got the air quality index all the way down to zero again and for a low cost device, i thought that was pretty impressive. the second filter i tried was by south korea's dynair and this one caught my eye because it used ultraviolet to kill airborne virus. it's very appropriate in these times. the machine has an automatic mode and built in sensors. so when it detects a lot of dust in the air, the light turns red and the fan kicks in, which it did as soon as i...