Butane Balance: Air Range: 10 ppm - 0.9%vol Symbol: C4H10 Warranty: 48 Months Product Options Concentration: -- Please Select -- 25% LEL, .45% vol | Balance Air 50% LEL, .9% vol | Balance Air Cylinder Size: -- Please Select -- 10 Liter Aerosol Bump 103 Liter Steel 17 Liter Steel 221 Liter Steel 34 Liter Steel Price: from $44.00 Updating cart...