Junior science refresher magazine

Junior science refresher magazine

Junior science refresher magazine published this article page no 19 air purifiers come in all sorts of different types, each working in different ways. the most popular filter is a kind of fibre mat that goes inside a frame or housing, and can quickly remove 99.97% of pollutants from the air – this is known as a high efficiency particulate absorbing filter. however, these highly effective air purifiers can be expensive, especially as they need to be replaced quite often at a high cost each time.if you just want your air to be cleaner, but not necessarily completely purified, you might consider a cheaper filter, or an air cleaner or air filter, all of which are terms used to describe cheap air purifiers. these devices may only remove 99% of particles from the air, but for most users, that will be enough. it is worth giving a cheaper filter a try first before you go all-out and buy the most expensive one, as you might be buying far more than you really need bright group of publications junior science refresher buy.

Junior science refresher magazine