will the Honeywell 50250 99.97% Pure HEPA Round Air Purifier be good to use when oil painting?
will this be good to use when oil painting and if so will it get everything out of the air so im safe when oil painting. and how long do i leav it on? and do i still need to open a window when painting

Using an air purifier effectively requires that you keep ventilation to a minimum. Opening a window is like trying to vacuum a dirt driveway. The air cleaner can’t keep up if you are continually allowing the allergens in by the window. You are looking for an air cleaner to help remove the odors and gases put off by the oil paint and a HEPA air cleaner won’t do it. The HEPA’s are for removing particles, not gases. You need to take a look at the Sun Pure SP-20C at http://www.allergy-relief-air-purifier.com/portable-air-purifiers.html It is effective at removing particles by way of the HEPA filter and neutralizing odors and gases by use of the photocatalyst. It is even effective at reducing carbon monoxide. Take a look at the independent third party test results to see if this machine suits your needs. You will also find that the only machine that comes close is the IQAir GC and that is compared with the Sun Pure here http://www.allergy-relief-air-purifier.com/best-home-air-purifier.html Notice that the replacement filters cost as much as purchasing a new machine every two years while the Sun Pure replacements are very affordable. I hope this helps.