Msa [india] limited the company offers carbon monoxide detecting tubes thereby providing an economical method of detecting the deadly poisonous gas with aspirator. Carbon monoxide gas concentration can be detected in the range of 10ppm to 1000 ppm by calorimetric process. These are ideally suited for use in steel mills, fertilizer plants, ship-holds, chemical factories, mines, aircraft hangers, public utility, and other industrial plants. The product has approval of dgms.