Capillary electrophoresis (CE)
Whereas mass spectrometry provides sequence accuracy, CE provides quantitative analysis of micropurity (i.e., the amount of full-length product in your tube). Samples of your oligos are placed in a gel under an electric potential, and as they migrate through the gel matrix they are separated according to length. The resulting electropherogram shows full-length product and truncated products, providing percentages for both. CE traces are provided free for purified oligos <60 bases; however, you can also request CE traces for unpurified oligos.