Advanced Chemical Sensors Monitoring Badges give you a cost-effective air sampling method that measures exposure to many regulated toxic vapors. This is a huge improvement over the mechanical sampling pump that was used for years to measure chemicals in the air. The pump had to be calibrated before and after the sampling period, which was a lot of work and very costly. Fortunately, ACS passive monitoring badges were developed to end air sample collection by a mechanical pump. A solid adsorbent separated by a porous membrane replaced the pump, although it acts like a pump with no moving parts. The method is more accurate without the complexity. There is no training required to use a badge. The price is all inclusive, which means there is no additional charge for analysis and report after you send in your samples.