I currently have two gallon plastic jugs of distilled water, which have been sitting on my darkroom shelf for about six months. One of these bottles is full, the other about half full.
Question: during the course of six months…would the half full bottle of distilled water have absorbed enough C02 from the air in its bottle to become acidic?
I’ve been wondering about this for a long time…and I ask this because I’ve just decided to give Formulary TF-5 a try as a potential replacement for TF-4 - and my understanding is that TF-5, while slightly alkaline, is a bit less alkaline than TF-4, and thus were I to mix TF-5 concentrate with acidic water I might end up with less build up of the wonderful image stains possible from PMK and Pyrocat developers.
Am I overthinking this?
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