Supply Of Gas Detector Tubes And Gas Detection Pump Of Draeger Make Only At Barauni Refinery , list of item ( s ) / work ( s ) as per tender documents , drager tube , h2s , 0 . 2 - 6 ppm , tube drager , h2s , 1-200ppm , drager tube f/h2s range:100-2000 ppm , drager tube , h2s 0 . 2 to 7 vol% , tube , drager detection , water vapour , tube drager , water vapour , 0 . 1-1% , gas detector tube drager hcl 29501 , drager tube , hcl 1-10ppm p/n ch29501 , tube drager detectn , hcl , 50/a , 50-5000ppm , dragger accuro pump , part no . 6400000