Quote Originally Posted by gutbomb View Post
How long does the steripen take to work and what volume of water can it treat at once? Can you stick it in a two-liter bladder?
90 seconds to sterilize a quart and 60 seconds for a pint. It has green and red indicator lights to tell you when it is working and if the sterilization is successful. You need to see the tube and the indicator lights so I don't think a 2 liter bladder would work. There is no option to sterilize 2 liters with is twice the maximum of a quart at a time.