[OM] Developer preservation, Was: Darkroom - Getting the paper to turn black

[Philippe Le Zuikomane]

Don't wine afficionados have devices that pump CO2 into bottles? Just 
wondering. -- Phil

On 12:06, Ian Nichols wrote:

>I've found it's much better to displace the air above the liquid
>with some sort of inert, or at least non-oxidising gas.


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