1987

Assessment of local meteorology became very important in dispersion of pollutants and therefore, Envirotech replaced cumbersome chart recording wind monitoring system with PC based data logging systems. 

WM 100 Series

1988

Envirotech introduced instruments for assessment of shop floor pollution and on workers.

1990

There was a realization that the entire dust present in the ambient air does not get inhaled by the human beings and only a fraction of it, that is inhaled, enters the human respiratory system. So, it became necessary to measure inhalable particles i.e. the particles which are less than 10 microns.

Envirotech in association with NEERI, developed a simple indigenous technology to separate total dust in the ambient air into two portions: inhalable particles and coarser particles and produced first instrument called Respirable Dust Sampler APM 451 with the know-how from NEERI, Nagpur

India’s First Respirable Dust sampler Envirotech APM 451

1998

To reduce emissions from the motor vehicles, Goverment of India made it mandatory to de-lead the petrol and Benzene was added as an anti-knocking compound. Therefore to detect the presence of benzene, due to combustion of petrol, Envirotech produced an activated charcoal adsorption based organic vapour sampler for monitoring benzene in ambient air.

 Organic Vapour Sampler

2004- 2005

The importance of Real Time Monitoring was felt as it was realized that we need to manage air Quality in a timely manner so monitoring the short term concentration values of the pollutants in the ambient air became a necessity. Envirotech took lead in this field and set up its first online monitoring station for APPCB at Hyderabad in 2005 and also took responsibilty for its operation and maintenance. This was an important  rquirement headed by Envirotech. Now it has become mandatory in country, to setup and take on the responsibility of operating and maintaining online monitoring station.

Thereafter, Envirotech has setup another 150 online monitoring stations across the country for various Pollution Control Boards as well as for some prominent industries.

Envirotech has also set up two online monitoring stations at Oman and operated and maintained them for a decade.

Envirotech sets up first online monitoring station for APPCB at Hyderabad

Envirotech sets up online monitoring station at Kanpur and Varanasi

2010-2020

Several improvements were made in the existing hardware based on the feedback received from customers in last two decades. Envirotech developed its first mass flow controller based PM 2.5 sampler, which can operate at a constant flow rate thorughout its sampling period.

Simillarly Respirable dust sampler was also made electronically flow controlled systems.

2013

Envirotech also setup a Real Time Noise Monitoring Station at Patna in association with Norsonic company based in Norway.

2015

In 2009, NAAQS were modified and Heavy metals monitoring in ambient air was made mandatory.

Envirotech with the help of IIT Delhi, produced a prototype Heavy Metal Sampler and tested it extensively in a coal based mine area at Singrauli, Madhya Pradesh.

Heavy Metal Sampler

2016

Scientist across the world found that Ultra fine dust particles of size less than 1 microns are more lethal particles that enter in human body and reach blood vessels.

Envirotech again took lead and with know-how from IIT Kanpur produced first indigenous Ultra-Fine dust sampler  APM 577

 Ultra-Fine dust sampler (PM 1) - APM 577

2017

In 2017, Mercury pollution grabbed the attention as its impact is really harmful on the human beings. Therefore, there was a need to monitor mecury in the ambient air. Envirotech again took lead  and produced toxic vapour sampler to monitor mercury vapours in ambient air.

Indigenous organic vapour sampler

Envirotech is actively looking at the features and keeps on identifying the possible new requirements for monitoring Air pollution and Air Quality and is now currently working with several academic and research institutions in the country to produce indigenous sensors for monitoring PM 2.5, CO and NO2, with the help of IIT Delhi and IIT Madras, under Uchhatar Avishkar Yojana launched by Ministry of Human Resource Development, Government of India. The project is still under progress. 

Recently, Envirotech signed an agreement with  IIT Jodhpur, to develop an indigenous instrument for monitoring odour in the ambient air.

Envirotech is actively working with IIT Madras, to develop road dust collectors and air purifiers. This process in ON both within the company and outside in the premier research institutes.