Shelf life of HC110

[Eric Rose]

I have an opened bottle of HC110 concentrate. What is the shelf life of this stuff once opened?

 

[Les McLean]

I've used it two years after opening the bottle with no noticeable effect on the film. This was the thick syrupy stuff not the pre-diluted version.

 

[Tom Duffy]

I used some 4 years after opening, works fine. I think the concentrate lasts forever.

 

[Eric Rose]

That's kind of what I expected. Must be really evil stuff!!

 

[Thilo Schmid]

</span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (EricR @ Mar 14 2003, 09:17 PM)</td></tr><tr><td id='QUOTE'>Must be really evil stuff!!</td></tr></table><span class='postcolor'>
Rodinal has been reported to be still usable after 40 years in an opened bottle. This is real evil, because it turns deep black after several years.