supply of filled hydrogen gas cylinder with own transportation for mechanical operation for unit 1 2 and 5 btps supply of filled hydrogen gas cylinder with own transportation for mechanical operation for unit 1 2 and 5 btps , part 1: , hydrogen gas , minimum 99.9995% purity compressed purified hydrogen gas, conforming to is: 1090 / 1983, grade-ii having minimum 99.9995% purity ( vol ) , moisture content less than 2.0 ppm, dew point:-65 degree c , nitrogen: 5 ppm, cylinder pressure :140-150 kg / cm2.item code: m10-z01-00003, hsn: 2804 , part 2 : cost of cylinder parts , painting of gas cylinder , replacement of cylinder valves , replacement of cylinder spindle , replacement of cylinder cap , replacement of gland nut , replacement of washer , testing of gas cylinder , part 3 : cylinder rental charge , cylinder rental charges for holding ( up to 10 days cylinder holding charge free of cost ) , gst ( if any )