Envirotech Instruments Private Limited

Envirotech – the pioneers of Air Pollution Monitoring in India
With the advent of the Air Act in 1981, there was a strong need for low cost and highly durable instruments for air quality monitoring in India. Setup in 1982, Envirotech Instruments was the first company to fill this void, and since then, there has been no turning back.

Today, Envirotech is the leading manufacturer of Air Quality monitoring instruments in India and is the preferred supplier for all Pollution Control Boards, prominent research institutions , leading industrial houses and environment consultants for their air pollution monitoring needs.

Affordable products designed for field use in harsh operating conditions
The biggest customer pain point with imported equipment is that they are hi-tech black boxes incompatible to the harsh operating environment in developing countries. Besides being expensive, these instruments are based upon secondary properties which require calibration and support facilities often not available in the local markets. Envirotech has therefore, consciously based its instruments on primary / standard methods by US EPA and WHO. Wherever necessary, features have been added to make the systems suitable for hot weather and sometimes erratic power supply. For example, gaseous sampling units of our High Volume Samplers have insulated cold boxes surrounding the wet-bubblers to ensure complete absorption of gaseous pollutants.

In house R&D and manufacturing
To maintain its leadership in the field of air monitoring, Envirotech has continuously upgraded its instruments and endeavoured to introduce better technology. To support the in house R & D effort, the company has developed close associations with a number of leading experts in important national institutes like IITs, Roorkee University, NEERI, and National Physical Laboratory. Such efforts have led to the addition of an Organic Vapor Sampler and a PM 2.5 Fine Particulate Sampler to our product range. Envirotech''''s in house R & D center has won recognition from the Department of Scientific and Industrial Research, Government of India

Envirotech uses its own 5000 square feet industrial premises at New Delhi to manufacture these systems. Fifty staff comprises of fifteen engineers and scientists, twenty-five technicians and balance administrative and marketing personnel.

Strong emphasis on reliable calibration
Besides strengthening the development effort, Envirotech has sought institutional support in calibrating its equipment. Flow metering devices used in Envirotech''''s products are periodically calibrated at IIT Delhi in test rigs developed for the purpose. The Wind Monitor has been wind tunnel tested at IIT Delhi. Sophisticated techniques like scanning electron microscope and laser particle counters have been used to evaluate our Respirable Dust Sampler''''s particle size cut-off

• Cost-effectiveness
• Premium quality
• Dexterous team
• Financial stability
• Modernized infrastructure facility

Continuous Ambient Air Quality Monitoring Station (CAAQMS) had been available in India for some time and had also acquired the dubious distinction of often becoming white elephants-systems installed at great cost which fail to work. Hundreds of online air qualities monitoring systems all over India are lying useless because of paucity of spares or lack of competent servicing. Envirotech had changed that scenario from its FIRST Station setup for the Andhra Pradesh Pollution Control Board (APPCB) at Hyderabad. It ensured that adequate and ready supplies of various spares parts and consumables like dust filter papers, calibration gases, scrubbers and scrubber materials etc, should be available instantly at the station itself. Envirotech feels that maintenance and operation needs continuous attention of dedicated and competent person and can not be left unattended.

Envirotech further feels that data generated by fte station should be regularly validated with manual monitoring. Data produced should be examined and interpreted daily. It should be Coi data! to Meteorological and Environmental condftors arc events & activities taking place in the vicinity of the station. Critical pollution periods must be reported daily. Only then the purpose of setting up taSD stations is likely to be fulfilled

• 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