Only Evotip Pure are compatible, tested and validated for use with the Evosep Eno. Evotip Pure are designed for a perfect low-pressure, leak free fit with the Evosep Eno. Use of any other product for sample introduction is not permitted and will void instrument warranty. Peptide solutions or other liquid proteomic samples are to be loaded on Evotip Pure according to the Evotip loading protocol. Find information here at www.evosep.com/evotip .