bids are invited for m9438229023 - refilling of 99 point 999 percent h2 in 10 lw c cyl , m9438229024 - refilling of cal gas 98 point 2 percent h2 bal n2 , m9438389004 - refilling of 5ppmo2 and bal n2 o2 anlyzr , m9438096030 - cal test gas 99point 99percent nitrogen co anlyser , m9438219001 - 92 point 2 percent h2 zero gas cylinder 10 lts cap , m9438226067 - span gas cylinder 10lts 100 percent h2 , m9438378672 - std o2 cal span gas 8 percent cylinder , m9438379003 - cal gas o2 analyser 0 point 24 percent o2 bal n2 , m9438119001 - span gas cy co2 analyser 30percent co2 , m9438456191 - span gas cylinder for nox analyser 10l , m9438456192 - span gas cylinder for sox analyser 10l , m9438099004 - refilling of cal gas 400 ppm co bal n2 , m9494509049 - hydrotesting of 10 ltr w c gas cylinder , servicing of cylinders , replacement of valve , collection and delivery charges total quantity : 171