It describes how the new Xt interface preserves all the benefits of low and stable polyatomic interferences with excellent signal to background ratios and a tailored response to allow ultratrace analysis of toxic metals at the same time as measuring major levels of low mass elements. This note shows how the Xt interface combines these characteristics with extremely high tolerance to matrix induced signal drift which will allow a higher level of laboratory productivity due to reduced QC failures and recalibration requirements.