Dear group: many people have pointed out that I responded "Yes" to a two-part question, leaving unresolved which question I was answering, and whether or not I still have any remaining mental capacity. Resolution to both of these highly complex issues is forthcoming. In any case, "Yes" we use NaOH on our benchtop analyzers that have flow cells. And "No" there does not appear to be any damage to them after 1 year of doing this constantly. Note that we always flush with distilled water following the base. I have no reason to suspect that 0.1N NaOH should do anything to quartz cells. Of course, I'm also the one who responded "Yes" to a two-part question, so you may take anything I say with a grain of salt (followed by distilled water). mr
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