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  1. #1

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    Chemical storage - why don't they......?

    Was having a random thought about storing chemicals and wondered why...?

    Plastic seems to leach oxygen into the liquid, oxidising it;
    Glass is the preferred option as this doesn't leach oxygen, though;
    A partially filled glass bottle has oygen in contact with the fluid - oxidising it.

    Why don't glass bottles come with a thin floating lid inside them to minimise the contact area with the oxygen in the part filled bottle?

    Not sure how this would be done - but they do get ships inside bottles

    Then I got carried away with thoughts of bottles like bar optics; upside down on a rack with "twiddle" knobs to dispense at the base and floating lids!

    Just a thought, but why not?

    Sim2.
    *dreaming*

  2. #2

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    If you were so inclined you could always draw a vacuum on the glass bottle then fill it with an inert gas after every use, or have it hooked to a lightly pressurized inert gas canister so you had a dispenser style system with inert gas as the propellant.

  3. #3
    Christopher Walrath's Avatar
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    Or just fill the bottle with glass marbles until the fluid level reaches the top. I know, not brainstorming the OT but I have always tried to ascribe to any KISS method applicable, myself.
    Thank you.
    CWalrath
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  4. #4
    Nicholas Lindan's Avatar
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    ---or--- only fill it half way, evacuate and re-pressurize with 2 atm of Nitrogen, turn up-side down with a dispensing spigot.

    Evacuation is a bit tricky - water boils in a vacuum...
    DARKROOM AUTOMATION
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  5. #5
    Nicholas Lindan's Avatar
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    [QUOTE=Christopher Walrath;1090306]Or just fill the bottle with glass marbles./QUOTE]

    I tried that - forgot the bottle was full of marbles when I poured. One heck of a mess... Don't do it with a wide-mouth bottle.
    DARKROOM AUTOMATION
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  6. #6
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    They did make metal containers with floating lids and bottom spigots at one time. I have 2 of the cans with no lids. I also have a heavy duty plastic container with floating lid and spigot. These were very handy, but have vanished as time went by.

    PE

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    Quote Originally Posted by Kitten View Post
    have it hooked to a lightly pressurized inert gas canister so you had a dispenser style system with inert gas as the propellant.

    Ooooo, I like this one - just need to rig it up to a multi-outlet handheld dispenser like they use for soft drinks. Nothing can go wrong here!!!

  8. #8

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    Quote Originally Posted by Photo Engineer View Post
    I also have a heavy duty plastic container with floating lid and spigot. These were very handy, but have vanished as time went by.

    PE

    Now I remember that at one agency we had big plastic containers with floating lids to feed the E6 dip and dunk, also for the Mutigrade print processor - but I reckon the 2 litres or so of chemicals I use now would be like a small puddle in the base of these monsters

  9. #9

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    Quote Originally Posted by Christopher Walrath View Post
    Or just fill the bottle with glass marbles until the fluid level reaches the top. .
    Yep, this is the sensible solution that I know I will end up with. As you say, KISS.

    But oh, the dreams of automated pressurized non-oxidised chemicals on demand.

  10. #10
    Sirius Glass's Avatar
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    Quote Originally Posted by Christopher Walrath View Post
    Or just fill the bottle with glass marbles until the fluid level reaches the top. I know, not brainstorming the OT but I have always tried to ascribe to any KISS method applicable, myself.
    I did this with a gallon of paper developer. By the time I had used 3/4s of it, I could hardly life and accurately pour from the bottle. That was the last time I did that. I bought accordian bottles. Yes, sometimes they leak in air.

    Steve
    Warning!! Handling a Hasselblad can be harmful to your financial well being!

    Nothing beats a great piece of glass!

    I leave the digital work for the urologists and proctologists.

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