User Review: Osprey Hydraform 3 Liter Reservoir

I own an Osprey Viper with a 3 liter bladder, and at first I had the same experience as Wildepirate. Water tasted like plastic. I didn't know if it was the bladder or the tube, but it tasted awful.

I did some online research into the problem. I read one article that recommend mixing 1/4 cup of common household baking soda into 2 cups of warm to hot water, and stirring until the baking soda was completely dissolved. Then pour the liquid into the bladder, making sure the drinking tube is entirely filled. This may involve ingesting a little of the liquid as you draw it through the tube, but remember that baking soda was used as an antacid, and is harmless. Try to remove as much air as possible from the bladder before screwing on the cover.

Let stand for an hour or so, and then flush multiple times. Voila! All plastic taste was gone. Water tastes as if it was fresh from the tap. Just remember to make sure you have something you can use to keep the bladder open when not in use to prevent mold or mildew from growing.

Osprey sells a somewhat pricy kit, but it is important that all surfaces be allowed to air dry.<br><br>I hope this helps someone.