Even if you use pre-columns and change the liner regularly – possibly even automatically – from time to time you need to clean the ion source. This happens even more often when you run high matrix concentrations to achieve low detection limits for your targeted analytes or your screening challenge. You may also run large volume injections. Our StayClean® open-style EI source virtually eliminates source cleaning, even after 3.000 injections of sludge extract the source performance remains optimal without any cleaning. This means you can spend your time running more samples and overall efficiency will definitively improve.