We provide Tender Bidding Support for Procurement Of Gas Detector Tubes In Digboi Refinery, 128 Drager Tube F H2s Range 100 - 2000 Ppm Tubes Drager Detection H2s 0 - 5 Ppm Tube Drager H2s 10-200 Ppm Tube Drager Detection Co 2 A 5-60 Ppm Tube Drager Detectn Hcl 50 A 50-5000 Ppm Tube Drager H2s 1 To 60 Ppm P N 8101961 Drager Tube Hcl 0 - 5 Ppm P N 8103481 Detector Tubes Hcl Drager Tubes H2s - 2 Percent A