Summary: Antonio Da Roza, Jessica Hefes
Originally reported: South China Morning Post
Want to buy an air purifier? 
SARS has gotten us to think about the air we breath. Here is a guide in how to choose the best air purifier. Some air conditioners have air-purification mechanisms, but air cleaners or purifiers have additional filter functions. There are four types of filters: general, high efficiency particle air (HEPA), carbon and iconic. HEPA filters also capture bacteria, and are regarded as best for nasal allergies.
- ↑ Buying an Air Purifier, SCMP, 03/08/03