Patent ID: 6151113
Filing Date: 2000-11-21
Classification: G01N

Abstract:
An evaporative light scattering detector (ELSD) comprising:a solvent nebuliser,a heated evaporation chamber,a detection chamber into which is directed a collimated light beam normal to the flow of nebulised solvent,a light sensitive device for detecting scattered light, anda diffuser-trapping device positioned within said evaporation chamber at a depth of between one third and two thirds of the height of said evaporation chamber and extending substantially across the full diameter of said chamber,said diffuser-trapping device being formed of a material, and having a porous structure, such that it (i) traps large droplets of said solvent from said nebuliser in said porous structure and, (ii) enhances heat transfer from said heated evaporation chamber to said droplets to enhance their evaporation.