Story highlights These concentrators are in addition to the first shipment of 200 oxygen cylinders sent on an urgent basis as part of a larger consignment on board the Indian Navy warship Airavat A Singapore-based education foundation has dispatched more than 500 oxygen concentrators to India to save the lives of coronavirus patients in the remotest corner of the country. Global Schools Foundation (GSF) reached out to Sewa International, a huge network of social initiatives across India, to tap their deep local resources and get these oxygen concentrators to the small towns and villages deep inside the country. These concentrators are in addition to the first shipment of 200 oxygen cylinders sent on an urgent basis as part of a larger consignment on board the Indian Navy warship Airavat.