My water is pretty soft (nyc tap water) so I use it for everything except final rinse of negatives, where I go for distilled to minimize spots. Deionized water would be the same thing. Water through a Britta filter would have just as much calcium and magnesium as the water from the tap, just not as much chlorine or small particles.
When out of distilled water I have run rinse water through a coffee machine with several paper filters (letting it cool, natch) bout I doubt those paper filters go down to 5 microns. Negs okay, tho.
Skip Roessel
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