supply of dga calibration gas mixture,calibration standard gas mixturedga calibration gas mixture,calibration standard gas mixture,dga calibration gas mixture,calibration standard gas mixture in 0.5 liter water capacity, alu minium canister consiting of 10 liters at 20 b a r pressure having following composition: 1) methane =100 0 ppm , 2) ethane = 1000 ppm, 3)acetylene = 1000 ppm, 4)ethylene=1000 ppm, 5) hydrogen = 1000 ppm , 6) co =5000 ppm,7) co2= 5000 ppm & balance nitrogen along with calibration certificate make: spantech ,spancan,sigma, hamilton & nucon. [ warranty period: 12 months after the date of delivery ] ]