Rust in developing tank

[Ace]

Hi guys!

New to the forum and also new to developing. Yay!

I've basically acquired an old Honeywell Nikor developing steel tank. I've just noticed that the lid with black coating has a little bit of what looks like rust? There's a bit more on the inside inner ring of the lid.

Can this tank still be used? How will it affect the chemicals and or film?

Thanks!
-Ace

 

[darkroommike]

I'm not sure that little bit of rust will hurt anything but I am surprised a genuine Nikor tank would have that issue. There are citric acid and phosphoric acid based preparations that convert rust to inert black compounds, you could possibly use one of these to eliminate the rust. Followed by a light buff with a green scrubber and lots of water rinses.

 

[mshchem]

I'm not sure that little bit of rust will hurt anything but I am surprised a genuine Nikor tank would have that issue. There are citric acid and phosphoric acid based preparations that convert rust to inert black compounds, you could possibly use one of these to eliminate the rust. Followed by a light buff with a green scrubber and lots of water rinses.

+1 It's from the weld point. I use citric acid solution to clean up my big Arkay sink. Restores the CrO layer. I agree with Mike shouldn't hurt. BTW citric acid is cheap on ebay.

 

[Ace]

Will definitely give it a try. Thanks, guys!

 

[AgX]

If stainless steel has undergone severe temperature (as in welding) or when contaminated with other iron-containing materials (as in grinding) its surface chracterictics may have changed, resulting in higher chance of corrosion. These effects typically are local.
These locations should be chemically treated in production.

In general stainless steels are not totally free from the chance of corrosion. This depends on the very kind of alloy and the substances they get in contact with.