Скачать или смотреть Paraytec: ActiPix™ TDA200 nano-sizing system

I produced this video for Paraytec Ltd ( http://www.paraytec.com ) and demonstrates the principles behind the operation of their ActiPix™ TDA200 benchtop nano-sizing system.

The TDA200 system contains a looped capillary, with 75 µm internal diameter, through which fluid is passed. The two arms of the capillary pass between a UV light source and the patented ActiPix™ UV area imaging sensor. A small slug of sample (10 to 100 nL) is injected into the fluid flow and the progressive spreading out of the sample profile (due to Taylor dispersion) is measured on the outward and return journey of the slug as it passes around the capillary loop. Data collected by the sensor undergoes software analysis to determine the hydrodynamic radius and diffusion coefficient of the sample.