If you wash an assortment of water bottles, take a photograph of them
first, or take some other stern measure to make sure you get each
bottle back together with its own lid. If two bottles of different
brands -- or the same brand from different production runs -- appear
to have interchangeable lids, the lids will differ exactly enough to
make the bottle leak, but not quite enough that you will notice when
you screw the lid on.

--
Joy Beeson
joy beeson at comcast dot net
http://wlweather.net/PAGEJOY/