WE have seen a similar problem, but on our 3700. I was happening only if we
left the plate for a couple of hours after we cleaned them up. The plates that
sat in water we got shifting "c"s to the point where it was almost unreadable.
Interestingly if we dried the samples down and resuspended them in Formamide
and ran them on the 3100 they did not do this.
Steve
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