I guess picogreen should not work well. It is a double stranded fluor that fluoresces very weakly in the presence of single stranded molecules. Hence it is not confounded much by RNA contamination of a DNA sample. For short oligonucleotides anneal over a short stretch I don't know you would get much signal.
But if your concentration results were fairly linear over a set of dilutions, I guess you will be okay.
Anyway, no, we have not tried it ourselves. Please let us know how it turns out.
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Phillip
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