The per base accuracy achieved in house by Ion Torrent on the [http://www.lifetechnologies.com/iontorrent Ion Torrent] Ion semiconductor sequencer as of February 2011 was 99.6% based on 50 base reads, with 100 Mb per run. The read-length as of February 2011 was 100 base pairs. The accuracy for homopolymer repeats of 5 repeats in length was 98%.  Later releases show a read length of 400 base pairs  These figures have not yet been independently verified outside of the company.