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When i was running the filterfor 2a hours, once again, it brought the air quality index all the way down to zero with no dust detected. and when i did kick up some dust, it quickly brought the levels down again. the final machine i tested was the dyson purifier hot and cool formaldehyde, which is called that because it not only removes dust from the air, but can also break down formaldehyde. one thing i did like about this machine is as well as being a passive airfilter, you can also use it as a fan on a hot day to blow air at you and cool you down, which the other two didn't do. and i think i...

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 his tuesday when i was running the dinner filterfor 2a hours, once again, it brought the air quality index all the way down to zero with no dust detected. and when i did kick up some dust, it quickly brought the levels down again. the final machine i tested was the dyson purifier hot and cool formaldehyde, which is called that because it not only removes dust from the air, but can also break down formaldehyde. one thing i did like about this machine is as well as being a p...

The dust levels went down. you can see exactly when i woke up and got out of bed and kicked up a load of dust. this is where i was sat on my bed doing some work. and then you can see later when i went to bed to go to sleep, again i kicked up a load of dust. to sleep, again i kicked up what was surprising here was that the air quality results actually looked a bit worse with the window open for 2a hours. i don't know if that was just because there was a breeze coming in and so the dust was kept agitated and floating around for longer. it's hard to say, but if you look at the next day's readings...

For 2a hours as all the other days the air quality improved while i was asleep. but with the filter running, the aqi went all the way down to zero and you can see exactly where i got up and kicked up a load 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....

So i left it running on medium for 2h hours. here's the air quality data from saturday with no intervention. and here it is from sunday with the tcp breather running for 2h hours as all the other days the air quality improved while i was asleep. but with the filter running, the aqi went all the way down to zero and you can see exactly where i got up and kicked up a load 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 th...