1. Sports filter – for sub-micron particle filtration (Respirable dusts 2. City filter – for micron particle filtration (inhaleable dusts PM10) and Organic vapour uptake. (City Mask/ Nightsite mask standard issue) 3. Techno filter – for sub-micron particle filtration (Respirable dusts...
and yet the US Embassy’s AQI number and their recommendation both were stronger than the MEMC’s. This brings up a great topic for debate — which formula is better than the other formula?
Restaurants: Even a 5-star can have infected foods, if the busboy or chef didn’t wash their hands properly. Also, look for the Beijing Health Department sanitation ratings at the front door. It’s usually a big blue sign with letters on it; A is top, B is ok. If you see C or ...