Scum on water surface in aluminum cointainer
Scum on water surface in aluminum cointainer
(OP)
All,
I have performed a leak test for an aluminum enclosure that has a bottom epoxied to the bottom by having it sit on the counter top with city tap water sitting in it for 5 days. No leaks but the water now has a whitish scum sitting on the surface, with a black jagged line creeping along just above the water surface.
I know I have seen this before and think it has something to do with the leaching out of the aluminum some chemical compounds, but I am not sure how to say it. Looking for the right terminology to use to help determine what exactly is happening.
J
I have performed a leak test for an aluminum enclosure that has a bottom epoxied to the bottom by having it sit on the counter top with city tap water sitting in it for 5 days. No leaks but the water now has a whitish scum sitting on the surface, with a black jagged line creeping along just above the water surface.
I know I have seen this before and think it has something to do with the leaching out of the aluminum some chemical compounds, but I am not sure how to say it. Looking for the right terminology to use to help determine what exactly is happening.
J
Windows XP
Pro x64 Edition
Intel Core Duo CPU
E7600 @ 3.06Hz
3.07GHz, 7.98 GB of RAM





RE: Scum on water surface in aluminum cointainer
B.E.
You are judged not by what you know, but by what you can do.
RE: Scum on water surface in aluminum cointainer
I've see a similar white "scum" on the surface of an clean aquarium when leak tested with city water and left to sit for a few days.. IMO its in the water already or is dust/dirt/skin,etc.. attracted to the water surface.
Try it with distilled and seal the container.
Without a chemical test its just guessing..
RE: Scum on water surface in aluminum cointainer