Thanks. Man, I feel dumb. Sublimination was the word I was looking for in my first post (I'll call it lack of coffee-early-morning syndrome). But still since the first day I have had it, I've kept at least more than 1/2 filled with water and I still get iodine staining in my bag. Not leaking stains, just general staining. I'm trying to find a new cap to put on to see if this helps, but until then I hope that the ziplock will suffice. If anyone knows of a particular replacement cap for this, I would appreciate it. Going down the OTC drugs aisle in the grocery store and trying different caps is my last option. <img src="images/graemlins/grin.gif" alt="" />

Thanks,

--Chris