New Delhi [India], April 16 (ANI): To meet the increased demand for medical oxygen in view of the surge in Covid-19 infections in the country, the Council of Scientific and Industrial Research-Indian Institute of Petroleum (CSIR-IIP), Dehradun and the Durgapur-based Central Mechanical Engineering Research Institute (CMERI) have developed oxygen concentrators and enrichment unit solutions for quickly setting up on-site oxygen enrichment units in hospitals itself.