The comprehensive 2D-LC methodology is a paradigm shift in liquid chromatography separation analysis. By combining two independent separation modes orthogonally in combination with a dual-loop/dual-valve alternate switching design, the highest possible peak capacity is achieved for LC chromatography separation.
The new Nexera-e enables separation of even the most complex mixtures, providing a new level of knowledge and understanding of sample analytes. This is especially beneficial to the analysis of pharmaceutical impurities, proteolytic digests, food extracts, natural products and synthetic polymers.
Separation far exceeding conventional 1D-LC
How many peaks are co-eluted under one peak? The more complex the sample, along with a high percentage of similar compounds, means there is a high probability of co-eluting compounds found under single peaks.
Even though the co-eluting compounds may be unable to be separated by mono-dimensional separation, the orthogonal two-dimensional system will provide the best possible result.
Adoption of Nexera X2 components offering ultimate performance
Comprehensive 2D-LC requires excellent performance from each component. For example, the 2nd-dimensional separation system requires ultra-first gradient analysis with a high flow rate and ultra-high pressure. Moreover, in order to analyze differences between samples, excellent retention time reproducibility is required under such analytical conditions.
Nexera-e is designed to meet and exceed such exacting requirements with its high-performance Nexera X2 components. For example, the solvent delivery unit, LC-30AD, provides solvent delivery at a flow rate up to 3 mL/min with a pressure limit of 130 MPa. In addition, the ultra-high-pressure switching valve, FCV-32AH, has a pressure limit of 130 MPa.
Such excellent performance expands the range of selection of 2nd-dimensional analytical conditions.
The Nexera-e incorporates a Shimadzu designed low-volume switching valve. Comprehensive 2D-LC requires frequent valve switching. Some valve systems may exhibit clogging issues due to abrasion powders. Using the robust technology developed for the Nexera X2 autosampler, this potential problem has been significantly minimized.
