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MALDI (mass spectrometer) spectra of two 20-mer oligos made in adjacent wells on the new synthesizer. Theoretical peaks for these spectra are (A) 6,043.0 and (B) 6,098.0 [all peaks are measured in Daltons/(electronic charge)]. The differences between the observed and theoretical peaks are due to slight calibration errors. Both spectra are very “clean” (i.e., they contain insignificant impurities).
