Response to Storage of diluted Xtol

I haven't personally had any problem storing XTOL stock solution, even in partially empty bottles over a period of months. I use glass bottles and mix in deionized water. Assuming deterioration is due to oxidation over time, you'd probably be able to store diluted XTOL if you go to greater measures to limit oxidation, like degassing the solution, topping and sealing the storage bottle, etc. However, why bother? A 2x dilution doesn't really require any special equipment or space. Any one-shot developer should be diluted immediately before use to avoid oxidation and other time-dependent deterioration.

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