Volume Options : 0.85% ( 20 Liter Buffered ) , 0.9% ( 1 Gallon Non Buffered ) , 0.9% ( 20 Liter ) , 0.9% ( 10 Liter Buffered ) , 0.9% ( 10 Liter Non Buffered ) , 0.9% ( 1 Gallon Buffered ) ,