Gradient elution involves a programmed change in mobile-phase composition over time, transitioning from weak to strong during a separation. Linear gradients, characterized by a constant change in ...

Since the first high performance liquid chromatographs (HPLC) hit laboratories in the 1960s, refractive index (RI) detectors have enabled the discovery of testing materials that do not possess ...

A team of researchers at the National Institute of Standards and Technology (NIST) and Applied Research Associates, Inc. (ARA, Alexandria, Va.) has demonstrated an improved microfluidic technique for ...