There are many ways for a company to purify the air for employees and visitors. There are also ways to clean air leaving a facility. One of these is to use air filter systems for cleaning pollutants from the incoming air of a room. Filter technologies are always being improved to make sure they are more reliable. What is the standard today could become the cheap version in a year. That is why the company needing such a system should talk with the manufacturer when they can to find out if there are better ways to keep people from becoming ill from the air.
While people are well aware there are suits to allow people to move around hostile environments, they have limitations. That is why there need to be ways to clean the air so that it is not considered hostile. Air filter systems do not need to be complicated to alleviate the need for these suits. The people in charge of designing the rooms that use a filtration system need to work with the manufacturer to make sure demands are met. People will be walking in and out, so that will need a way to be done that does not bring in pollutants that overwhelm what is used.
There are many ways that reliability will be necessary. People do not want to spend money on constant repairs and replacement. They want the system to work for long period with the least amount of effort. That is why there are always people in charge of purchasing that are looking for a company that can provide reliable and stable systems for safety. When looking into what is necessary for people to be able to rely on the air they breath, check out Air Clear at https://www.airclear.net/.