Xorondra's
03.09.2021
"According to the description, violet has an antibacterial effect, the green filter absorbs formaldehyde, which is a solvent used in paints and treated wood panels and is released into the indoor air over time. This filter would be recommended for new buildings and after renovations, for example. The grey HEPA filter is the standard dust filter."
I hope I was able to help you with this xD