The model number of the Mini Notebook is a 280M.

From what I CAN see on the bottle, it says: (thanks, because I never knew)
Weight of cylinder full: 24 (?? paper ripped a little)lbs and 12oz
Weight of cylinder empty: 14lbs and 12oz
Weight of gas: 10lbs 0oz
So I guess its safe to say its a 10lb bottle and it definatly has something in it because it is HEAVY. lol

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