how air purifiers work - auto ozone air purifier

There is a problem with the efficacy of cleaning AirIf ozone generators and ionising purifiers in cleaning the air, what can we do to remove the contaminants at home?
There are three basic steps to be useful: of course, the next logical question is "how do you know which air purifiers work ? "?
"Fortunately, there is an industry standard that makes it easy to compare air purifiers.
Association of Home Appliance Manufacturers (AHAM)
Specify the rate of Clean Air Delivery (CADR)
Air purifier.
AHAM conducted a standard test to see how effective the air purifier is to remove certain contaminants from the air.
Air purifiers with AHAM seals will list three CADR numbers: one for tobacco smoke, one for pollen and one for dust.
Higher numbers indicate a stronger air cleaning capability, a maximum of 450 for pollen and smoke, and a maximum of 400 for dust [ref].
AHAM recommends using an air purifier with a CADR number of at least two
Search the area of the room from the CADR website: "For example, 10-foot by 12-foot room --
120 square feet-
An air purifier with at least 80 cigarette butts is needed.
If your room is small, the unit will clean the air more frequently or faster.
If the ceiling is above 8 feet, you will want an air purifier for a larger room.
"For more information on air purifiers and related topics, please see the link below.