Air Quality Research manufactures the USEPA indoor air monitor for Formaldehyde. Air Quality Research developed the indoor area Formaldehyde monitor 30 years ago at the University of California. The indoor air Formaldehyde monitor has been used more than 750.000 times. The Color-Tec method was developed during 1997 by Perry Kelso at Ecology and Environment, Inc. while assessing/remediating the earliest sites addressed under the Florida Department of Environmental Protection’s (FDEP) Drycleaning Solvent Cleanup Program. Since its development, the method has been used extensively at EPA, DOD, and various state regulatory agency sites to provide real-time, decision quality data at thousands of chlorinated solvent sites.