Shelf life of HC110

Discussion in 'Color: Film, Paper, and Chemistry' started by Eric Rose, Mar 14, 2003.

  1. Eric Rose

    Eric Rose Subscriber

    Messages:
    4,454
    Joined:
    Nov 21, 2002
    Location:
    Calgary AB,
    Shooter:
    4x5 Format
    I have an opened bottle of HC110 concentrate. What is the shelf life of this stuff once opened?
     
  2. Les McLean

    Les McLean Subscriber

    Messages:
    1,609
    Joined:
    Oct 18, 2002
    Location:
    Northern Eng
    Shooter:
    Multi Format
    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.
     
  3. Tom Duffy

    Tom Duffy Member

    Messages:
    963
    Joined:
    Nov 13, 2002
    Location:
    New Jersey
    I used some 4 years after opening, works fine. I think the concentrate lasts forever.
     
  4. Eric Rose

    Eric Rose Subscriber

    Messages:
    4,454
    Joined:
    Nov 21, 2002
    Location:
    Calgary AB,
    Shooter:
    4x5 Format
    That's kind of what I expected. Must be really evil stuff!!
     
  5. Thilo Schmid

    Thilo Schmid Member

    Messages:
    357
    Joined:
    Sep 10, 2002
    Location:
    France
    Shooter:
    Multi Format
    </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.