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> Protective gas for chemicals in bottles |
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#41
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Just checking, the first link is a funnel that Nat alludes to and the second is another interesting way of doing it: https://i.pinimg.com/474x/6b/79/1f/6...ng-fillers.jpg https://www.amazon.co.uk/Stainless-W...196242&sr=8-16 Happy drinking however you do it! Terry S |
#42
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#43
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Terry S |
#44
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Nor have I. Any port will do, especially in a storm.
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#45
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Isn't the problem with port, of the deep red variety especially, the storm that occurs the morning after reaching for the port
pentaxuser |
#46
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The amount of gas in a liquid has a natural maximum it will absorb and it will quickly reach equilibrium. The warmer it is, the less gas it will absorb.
That is why developers contain preservative chemicals such as sodium sulphite which preferentially bind to oxygen and prevent it interacting with the other chemicals. The main thing is to stop more oxygen getting into the chemical as at some point, all the preservative will be bound to oxygen and any more is free to effect the developer. Floating an inactive gas on top prevents more oxygen reaching the developer. This is probably not important in a nearly full bottle with just a small air gap at the top as the preservative can probably deal with that much extra oxygen, but is likely to be very important with a half-empty bottle - i.e. half full of air. As in all things, the answer is "it depends". And also, as with most things, no one knows how much "it" actually is... So better to take the engineering view and err on the safe side |
#47
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#48
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My guess is that developer will splash up the sides and stick around the neck somewhat while moving the bottle and provide the greatest surface area to the air. Possibly in glass the developer mostly falls back but in plastic the liquid may be more inclined to stick - don't know but it seems somewhat logical... |
#49
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By the next morning (Sunday) both developers were VERY dark brown. From this I deduced that milk bottles should NOT be put on the list of bottles suitable to store chemicals in, but specifically NOT developers, in them. Milk is obviously not affected. Sunday, I mixed up another litre of lith developer, but this time put it into two washed wine bottles, gassing one. 20 hours later, the non-gassed ones contents had become straw yellow. Today, Wednesday, one has continued to darken, while the gassed bottle remains clear. I will give it until the weekend and then post some pictures of the two bottles, after which I will try out the two developers to see if either of them still work. I am confident that the one that hasn't changed colour will be fine at least, having stored partially used wine bottles of home mixed D76 / ID11 many times, with some 'gas' put into the bottles. Quote:
I hope this helps people make their own decision in whether to use the 'gas' or not. Terry S |
#50
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