( bration. The SIL-20AHT/20ACHT autosa...)Prominence UFLC

bration. The SIL-20AHT /20ACHT autosamplers boast the worlds fastest injection (10 sec, 10 L injection time), as well as suppressed carryover achieved by special surface coating of the needle and the improved needle seal. Figure 2 shows the analysis of 7 alkyl phenones, demonstrating ultra-fast gradient analysis with a 32-second cycle time. A fast autosampler and standard features such as automatic purging allow users to shorten the overall analysis time and experience truly fast LC analysis.
See Figure 2

Maximizing Reliability
The UFLC modules have many design improvements to consumable parts such as check valves, pistons, and the autosampler rotor seal. These improvements allow UFLC components to operate reliably as a conventional or UFLC system, whereas with other systems currently on the market, the extremely high backpressure may contribute to more frequent replacement of consumable parts.

Steep gradients for performing short cycle time analyses and heat generated by high pressure in the column may produce poor reproducibility of retention time and peak area. Responsive tracking of a quickly changing flow rate is essential in highspeed gradient analysis. The Prominence UFLC features excellent solvent delivery flow performance with its pumping resolution of 3.7 nL using micro stroke technology (10 L/stroke) and superior solvent delivery flow control (response of 0.1 second) to provide excellent retention time repeatability. Moreover, at higher flow rates, columns such as the XR-ODS, with an internal diameter of 2 mm to 3 mm, are most appropriate as they can better handle the increased mobile phase flow rate and minimize wear on instrument components, such as pump pistons and seals, autosampler rotor, etc.

As the columns internal diameter becomes smalle
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