1981 Air (Prevention & Control of Pollution) Act is passed by Indian Parliament
1982 EIPL produces the first indigenous Stack Monitor for Source Monitoring and High Volume Sampler for Ambient Air Quality Monitoring
1984 Envirotech’s Consultancy division performs the first comprehensive EIA Study in India
1987 EIPL introduces Data Logging Wind Monitoring Systems as a replacement for Chart recording systems used in EIA studies
1990 EIPL produces the first Indian PM10 Sampler with know-how from the National Environmental Engg. Research Institute (NEERI), Nagpur
1994 PM10 included as a Criteria pollutant in the National Ambient Air Quality Standard
1998 EIPL produces a Monostatic SODAR with help from scientists of National Physical Laboratory (NPL)
1998 Country moves to remove Lead from Motor Spirit – replaced by a Benzene derivative
1999 EIPL introduces Activated Charcoal adsorption based Organic Vapor Sampler for monitoring BTX levels in ambient air
2000-01 EIPL carries out the first Carrying Capacity study at Satna – MP and firmly underlines the importance of Mixing Height measurements for understanding Air Pollution Dispersion
2000-01 EIPL produces the first Indian PM2.5 Sampler based on EPA’s public domain Impactor design
2005 EIPL enters the Continuous Online Air Quality Monitoring field by setting up a station for APPCB at Hyderabad and for the first time in the country also takes up O&M responsibility. Partnerships fomented with Ecotech, Australia and Synspec, Netherlands
2008 Envirotech introduces a hand held Class II Integrating Noise Level Meter to its product suite
2008 EIPL produces the first indigenous PM2.5 Sampler that uses automated Mass Flow Control
2009 Revised National Ambient Air Quality standards include PM2.5 measurement in ambient air
2012 EIPL develops a new model of PM2.5 Sampler with electronic flow control and USB data logger
2013 EIPL diversifies into Real Time Noise Monitoring through a tie up with Norsonic AS based in Norway
