<blockquote><font size=1>In reply to:</font><hr><p>Anyone have any idea if PA will erode cork ?<p><hr></blockquote><p><br>No doubt. As the tablets release free iodine, it will attack (oxidize) the cork (organic). However, I think you could use a piece of PTFE (Teflon) pipe thread tape to prevent that problem. Lay a short piece of tape over the mouth of the bottle and then press the cork in.<br><br>Regards,<br><br>Scouter Tom