TSI aerosol monitoring equipment provides real-time, immediate access to data that moves you past the problem and onto critical decisions and solutions. From continuous active sampling to trending analysis, the DUSTTRAK™ Aerosol Monitors and intrinsically safe SIDEPAK™ Personal Aerosol Monitors have what you need for challenging exposure monitoring applications. TSI,www.tsi.com, (800) 874-2811.  products