Product

Of the basic performance specifications required of analytical instruments, high reproducibility and low sample carryover are particularly important, and are essential for high-separation, high-sensitivity analysis.
With Prominence, these needs were addressed at an early stage, and superior technology was cultivated for all the fundamental elements. This included a high-performance pump, an autosampler capable of a high level of injection reproducibility, even for minute quantities, and an injection mechanism that prevents sample carryover. These technologies have all been inherited by the Prominence UFLCXR, and support high-separation, high-sensitivity analysis.

The SIL-20A(C), which has an established reputation for low sample carryover, has been joined by the SIL-20A(C)XR, which has high-pressure-resistance specifications. Its sampling needle incorporates special surface treated technology and the utmost consideration has been given to the structure of the needle seal and material of flow channel parts. With this autosampler, there is substantially no carryover even for chlorhexidine, which is a representative example of a highly adsorptive basic substance.

The SIL-20A(C)XR uses the direct injection method (total-volume injection method), in which the mobile phase passes through the interior of the sample needle, and so adsorptive components are washed through by the mobile phase. This makes it possible to attain excellent reproducibility of no greater than 0.3% RSD, even in the injection of minute quantities.

(Based on 20 mg/L of caffeine, n=6)