Is it safe to combine 2 bottles of HC-110 ?

Discussion in 'B&W: Film, Paper, Chemistry' started by wblynch, Aug 3, 2011.

  1. wblynch

    wblynch Member

    Messages:
    1,646
    Joined:
    Feb 9, 2009
    Location:
    Mission Viejo
    Shooter:
    127 Format
    I have a half-used bottle of HC-110 that's about 1 year old. I was given another 1/2 bottle that appears to be 1 1/2 to 2 years old. (Both work fine for developing)

    Is it safe to combine the contents into one bottle?

    I need to clean up my storage area and reclaim some space.

    Thank you all, Bill
     
  2. BradS

    BradS Subscriber

    Messages:
    4,203
    Joined:
    Sep 28, 2004
    Location:
    S.F. Bay Area
    Shooter:
    4x5 Format
    pretty sure that would be totally fine but, you could try this....

    draw 5ml from one bottle and 5ml from the other , mix with water to make 400ml. Use this to develop a roll or sheet of film.
     
  3. Christopher Walrath

    Christopher Walrath Member

    Messages:
    7,114
    Joined:
    Dec 30, 2005
    Location:
    In a darkroo
    Shooter:
    Multi Format
    Um, yes.
     
  4. Gerald C Koch

    Gerald C Koch Member

    Messages:
    5,830
    Joined:
    Jul 12, 2010
    Location:
    Southern USA
    Shooter:
    Multi Format
    How much space does one bottle take? In a laboratory you would never do this. If one bottle is contaminated the result is that the mix is also contaminated. Yes, your darkroom isn't a lab, but it is never a good idea.
     
  5. TareqPhoto

    TareqPhoto Subscriber

    Messages:
    971
    Joined:
    Nov 19, 2009
    Location:
    Ajman - U.A.
    Shooter:
    Multi Format
    Don't combine until you are sure both can develop same way fine, then i don't see why can't combine both if they both are working just fine same, but as it said, check out first if both bottles developers working fine the same.
     
  6. 2F/2F

    2F/2F Member

    Messages:
    8,005
    Joined:
    Apr 29, 2008
    Location:
    Los Angeles,
    Shooter:
    Multi Format
    And they will work fine for longer if you combine them to get rid of the air. It isn't something you'd normally want to do with chemicals, but I would hazard to guess that it will be absolutely fine in this case. HC-110 is not very finicky. I wouldn't even bother trying to mix them. I'd just pour one into the other and let it stand.

    That being said, when I get a new bottle, I pour it into two smaller glass bottles. In your case, I might just do that. There should be some mini (240 or 250 mL) PETE water bottles at the market; they would work well.
     
  7. michaelbsc

    michaelbsc Member

    Messages:
    2,106
    Joined:
    Dec 18, 2007
    Location:
    South Caroli
    Shooter:
    Multi Format
    I don't think that's a good perception. I certainly think of my "photo lab" as a lab.

    No, it isn't a licensed business, and it isn't a commercial lab of any sort. And it probably pales compared to what some here have.

    But good results require good practices, so whether you have a single piece of plywood across a toilet seat or something that makes Clyde Butcher embarrassed thinking of it as a place that requires discipline like a lab is a "good thing" in my mind.

    MB
     
  8. Leigh B

    Leigh B Member

    Messages:
    1,035
    Joined:
    Jan 17, 2011
    Location:
    Maryland, US
    Shooter:
    Multi Format
    I would leave them separate, and use the older one first.

    That way if at some point you decide it's bad, you still have the other one.

    If you combine them and decide it's bad, you must discard all of it.

    I don't use HC-110, but I've heard that the concentrate has a very long shelf life.

    - Leigh
     
  9. 2F/2F

    2F/2F Member

    Messages:
    8,005
    Joined:
    Apr 29, 2008
    Location:
    Los Angeles,
    Shooter:
    Multi Format
    They simply will not be bad at that age.
     
  10. Leigh B

    Leigh B Member

    Messages:
    1,035
    Joined:
    Jan 17, 2011
    Location:
    Maryland, US
    Shooter:
    Multi Format
    Best advise I've read in many a year. :cool:

    - Leigh
     
  11. Mainecoonmaniac

    Mainecoonmaniac Subscriber

    Messages:
    3,854
    Joined:
    Dec 10, 2009
    Shooter:
    Multi Format
    I've used HC-110 syrup that was dark and it seems to resist oxidation. I don't think it matters if you combine the bottles or not. I don't know if other APUGers have the same experience. I wonder if it's the glycerin in the developer that makes it so robust?
     
  12. MattKing

    MattKing Member

    Messages:
    16,140
    Joined:
    Apr 24, 2005
    Location:
    Delta, BC, Canada
    Shooter:
    Multi Format
    HC-110 isn't particularly susceptible to oxidation or other degradation from exposure to air. It is susceptible, however to degradation from exposure to water.
     
  13. Gerald C Koch

    Gerald C Koch Member

    Messages:
    5,830
    Joined:
    Jul 12, 2010
    Location:
    Southern USA
    Shooter:
    Multi Format
    You missed the point I was making. I was expecting someone to say that his darkroom wasn't a lab and therefore a lab rule made no sense for him. There are some on APUG who revel in not being professional in their manner. It is a badge of honor to them.
     
    Last edited by a moderator: Aug 4, 2011
  14. wblynch

    wblynch Member

    Messages:
    1,646
    Joined:
    Feb 9, 2009
    Location:
    Mission Viejo
    Shooter:
    127 Format
    Well, I'm not proud, but my darkroom/lab is no more than a spare bathroom sink at this time. That's why I need to tidy up and reclaim some space. :smile:

    I think I'll leave well enough alone and simply start shooting more black and white to use it up faster ! Lord knows I've got a fridge/freezer full of the stuff. :D
     
  15. BetterSense

    BetterSense Member

    Messages:
    3,114
    Joined:
    Aug 16, 2008
    Location:
    North Caroli
    Shooter:
    35mm
    I normally label all my chemicals with the approximate date of acquisition and expiration, but my HC110 is labeled only "immortal".

    I think mixing them will be fine.
     
  16. MattKing

    MattKing Member

    Messages:
    16,140
    Joined:
    Apr 24, 2005
    Location:
    Delta, BC, Canada
    Shooter:
    Multi Format
    Bill:

    Try an experiment. If you usually use 6 ml of concentrate per roll (12 ml for two) try mixing 6 ml from each bottle and develop two rolls.

    If they both come out well, go for it!
     
  17. Leigh B

    Leigh B Member

    Messages:
    1,035
    Joined:
    Jan 17, 2011
    Location:
    Maryland, US
    Shooter:
    Multi Format
    And if not... You just wasted two rolls of film. :confused: :whistling:

    - Leigh
     
  18. MattKing

    MattKing Member

    Messages:
    16,140
    Joined:
    Apr 24, 2005
    Location:
    Delta, BC, Canada
    Shooter:
    Multi Format
    At most, one more than if you mix the two bottles together, and the resulting mixture doesn't develop your film correctly.:tongue:
     
  19. 2F/2F

    2F/2F Member

    Messages:
    8,005
    Joined:
    Apr 29, 2008
    Location:
    Los Angeles,
    Shooter:
    Multi Format
    Look, since posters have so many reservations about year-and-a-half old HC-110, why don't you just send the bottles to me?

    Just don't worry about it, and use them. Together. Separately. Whatever. They will work fine.
     
  20. Leigh B

    Leigh B Member

    Messages:
    1,035
    Joined:
    Jan 17, 2011
    Location:
    Maryland, US
    Shooter:
    Multi Format
    That's why I said not to mix them in the first place. :munch:

    - Leigh
     
  21. michaelbsc

    michaelbsc Member

    Messages:
    2,106
    Joined:
    Dec 18, 2007
    Location:
    South Caroli
    Shooter:
    Multi Format
    Point taken. Thanks for clarifying.


    My first darkroom was my parent's bathroom. I think that's pretty common here.

    Many people produce superb quality work with nothing more than a bathroom. Does a bigger room, especially now that I'm old, fat, and gray with an empty nest and enough disposable income to afford a dedicated room make me better. No. It makes me more comfortable. And makes some tasks easier.

    But as I pointed out earlier, from my perspective at least, what makes one successful is having the discipline to be able to produce/reproduce results at will. And you can absolutely do that in a part time conversion bathroom or laundry room in a cramped studio apartment. You work with what you've got where you are. No shame involved.

    If it's all just haphazard we may as well shoot Holga's and pray the black tape doesn't fall off at the wrong time. (Or is that pray that it does fall off at the right time? I can't keep that part straight.)

    MB
     
  22. wblynch

    wblynch Member

    Messages:
    1,646
    Joined:
    Feb 9, 2009
    Location:
    Mission Viejo
    Shooter:
    127 Format
    And how would that be any different from all my other photography ??? :confused: :laugh:
     
  23. Christopher Walrath

    Christopher Walrath Member

    Messages:
    7,114
    Joined:
    Dec 30, 2005
    Location:
    In a darkroo
    Shooter:
    Multi Format
    Um, yes.
     
  24. alanrockwood

    alanrockwood Member

    Messages:
    798
    Joined:
    Oct 11, 2006
    Shooter:
    Multi Format
    Christopher,

    I like your youtube posts (mostly).

    Alan
     
    Last edited by a moderator: Aug 6, 2011