Stoppered Bottles

Discussion in 'B&W: Film, Paper, Chemistry' started by Lobalobo, Jan 31, 2009.

  1. Lobalobo

    Lobalobo Subscriber

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    Because I seldom use my b&w chemicals, I mix only about a quart at a time, and even then routinely have them go bad before I use them again, and then have to mix a new batch. Very annoying. I had hoped to buy some cheap dark-glass bottles and then use one of those wine-bottle vaccuum devices and rubber stoppers to pump out the air. The problem is that I can't find the bottles anywhere. I know that I can use actual wine bottles, but they aren't quite large enough, I don't think. And I've tried those collapsible plastic bottles but they tend to spill and will eventually crack, I think. Suggestions welcome.
     
  2. ann

    ann Subscriber

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  3. Marco S.

    Marco S. Member

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    I also use the amber rounds from specialty bottle. If you decide to go that route, I suggest the Polyseal caps, they seal better than the standard caps for a few cents more. :smile:
     
  4. tokam

    tokam Member

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    Instead of attempting to pump out the air with a Vacu-vin or similar, you could replace the air with an anti-oxidant such as Tetenal Protectan. This is a heavier-than-air gas that you squirt into the bottle to displace the air. It comes in 400ml cans and claims to displace 250ml of air with a 5 second spray. The can claims to contain sufficient to displace 100 litres of air - 25 US gals?

    The contents are highly flammable which may present problems with mail ordering.
     
  5. dancqu

    dancqu Member

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    I also use the Boston Rounds. Polyseal or Polycone
    caps have a built in PE cork which snugs into the neck
    of the bottle as the cap is screwed on. Search for Boston
    Rounds. Many sources. Also in wide top and clear glass.
    A standard for chemical storage for many
    generations. Dan
     
  6. ricksplace

    ricksplace Member

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    I agree. I have used them for years and they work well.

    You may want to try one-shot developers like Rodinal or HC110 if you don`t use b&w developers very often. The concentrate keeps for years. Stop bath and fixer last well regardless of what kind of bottles are used.
     
  7. keithwms

    keithwms Member

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    Wine bottles + those plastic vacuum corks.
     
  8. fschifano

    fschifano Member

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    Tetenal Protectan, that's lipstick on a pig for sure. It's butane with a fancy wrapper and an obscene price tag. Better to use propane from a soldering torch. The whole setup will cost you maybe $20 US the first time. Refills maybe $3 to $4 US. It works.
     
  9. keithwms

    keithwms Member

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    How about just vacuuming while agitating. That should liberate gas.
     
  10. BetterSense

    BetterSense Member

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    Or filling the bottle all the way up, so there's no air pocket at all in the first place.
     
  11. keithwms

    keithwms Member

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    That's true, but even if it's filled all the way up, a substantial amount of gas can be included in the liquid.
     
  12. mts

    mts Subscriber

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    When I learned darkroom techniques some 50 years ago, the old fellow who taught me used a cork-tube and a small vacuum pump to pull the air out of the developer solution. Air bubbles flowed to the top of the solution and then out to the pump. He replaced the bottle cap figuring that the main culprit in spoilage is air dissolved into the fluid most of which comes out with vacuum. He didn't worry about the air that remains in the bottle. It seemed to work well for him keeping developers good for months.

    I use mostly D-76 stock diluted for one-shot, or TMax clone mixed from scratch and then diluted 1:4, and I have not had any difficulty with stock solution deteriorating over a period of up to a year. At least none that I can detect from inspection of the negatives. I suppose densitometry might show some effect, but it's not enough to be noticeable or to affect printing.
     
  13. dancqu

    dancqu Member

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    And fill to the brim to start. Plan ahead. A roll of film
    to process? Have a small full bottle of the developer ready
    to go. Same for prints, I know ahead how much chemistry
    is needed and have a small bottle ready to go. Fix I mix
    fresh each session. As I use all chemistry one shot
    there is no need to re-bottle. Dan
     
  14. gainer

    gainer Subscriber

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    And then not letting the temperature increase.
     
  15. gainer

    gainer Subscriber

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    Since I don't get any royalties, I suppose it's OK to tout PC-TEA. It, HC-110 and Rodinal are about in the same class for carefree storage in less-than-full bottles.
     
  16. Christopher Walrath

    Christopher Walrath Member

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    I got mine from either B&H or Freestyle. I think the prior. Just did a serach form something like 'glass bottle' and found them easily.
     
  17. Vinylman

    Vinylman Member

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    Hi I use brown glass bottles with a twist cap and as for eliminating air, I fill up the space with marbles. I used this method when I used Microphen developer and it worked. Keep bottle in a cool temperature. Fridge if possible, but not with food!!! Phil
     
  18. Christopher Walrath

    Christopher Walrath Member

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    I like the marbles idea. I'm gonna have to do that, well, now as a matter of fact.