How often do you change your Philips acm055 mask?

24 hours. Philips acm055 mask 24 hours to change once, the number of reuse is not more than 5 times, the mask is broken, dirty, wear after breathing poorly, can not be used again. Philips, founded in 1891 in the Netherlands, mainly produces lighting, home appliances, medical systems products. Philips, in 2007, the global workforce has reached 128,100 people, with production bases in 28 countries around the world.