supply of standard gas mixture for calibration of dissolved gas analyzer 10 ltr capacity aluminium can with nozzle and screw fine control valve on to out let valuestandard gas mixture for calibration of dissolved gas analyzer 10 ltr capacity aluminium can with nozzle and screw fine control valve on to out let value,standard gas mixture for calibration of dissolved gas analyzer 10 ltr capacity aluminium can with noz zle and screw fine control valve on to out let value, concentration of gases as methane 100 ppm, ethane 100 ppm, a cetylene 50 ppm, carbon dioxide 2500 ppm, carbon monoxide 1000 ppm, hydrogen 150 ppm, ethyene 200 ppm, ni trogen balance. make: spantech / centurion / kshama or similar. [ warranty period: 30 months after the dat e of delivery ] ]