supply of standard calibration gas mixture in canister with nozzle, fine control & gas composition.standard calibration gas mixture in canister with nozzle, fine control & gas composition.,standard calibration gas mixture in canister with nozzle, fine control & gas composition/ gas quality certificate for dga water capacity 0.5 ltr. approx pressure 20 kg/cm2 in canister & stability 12 mon ths. canister containing ch4, c2h6, c2h4, c2h2, h2 gas 1000 ppm & co and co2 gas 5000 ppm each bala nce n2 gas. make spancan, upg, phoenix or equivalent, canister required with regulator. [ warranty peri od: 30 months after the date of delivery ] ]