However, until more experience is gained, the most reasonable recommendation is that the amount of pollutants in the air be reduced as much as practicable. Gaseous contaminants can be removed by chemical filters, wet scrubbers, or a combination of both. Particulate matter can be mechanically filtered. Electrostatic precipitators should not be used because they produce ozone. Equipment varies in size and complexity from individual filters attached to vents, furnaces, or air conditioners to building-wide systems.
Equipment also varies greatly in effectiveness.
It is important that the equipment chosen be suited to the institution's needs and the level of pollution in the area where the institution is located. A regular schedule of maintenance and filter replacement should be followed. An experienced environmental engineer should be consulted for recommendations. There are several additional ways to control air quality. One is the provision of good air exchange in areas where collections are stored or used, with replacement air being as clean as possible.