Kerala State Pollution Control Board (KSPCB), Kerala
Neyveli Lignite Corporation Ltd, Neyveli, Tamil Nadu
National Environment Engineering Research Institute(NEERI),CSIR Govt. of India
National Petroleum Corporation Ltd., (NAPESCO), Kuwait
SMS Laboratories, Chennai
Water Authority of Fiji, Suva
Kerala Water Authority, Trivandrum , Kerala
Ashwamedh Laboratories, Nashik