I setup an electro blotting experiment for overnight wet transfer using Tris glycine based transfer buffer at 20V. Next day , to my surprise there was lots of rusty froth in the tank. Also their was deposition of heavy rust on negative electrode. I've performed several O/N transfers earlier, but this was the first time I observe such reaction. Did any body experienced it ? what could be the possible reasons behind?
Blotting details:
PVDF 0.22 uM membrane
Transfer buffer: Tris Glycine with 10% methanol