Dynamic light scattering microvolume cell assembly for...

G - Physics – 01 – N

Patent

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Details

G01N 21/05 (2006.01) G01N 15/02 (2006.01) G01P 5/26 (2006.01)

Patent

CA 2195986

A dynamic light scattering analyser which comprises a cell housing (3) and a cell chamber (9), the cell chamber (9) being formed within the cell housing (3) such that the cell chamber (9) is exposed to a membrane (17) which is capable of retaining within the cell chamber (9) the particles of a sample introduced into the cell chamber (9) while allowing a liquid carrier to diffuse across the membrane in and out of the cell chamber; a light source, an optical waveguide (37, 39) which is capable of exposing the particles to a light source and which is capable of receiving the light scattered from the particles within the cell chamber (9) and the light reflected from the waveguide-solution interface; and a pump for controlling the flow rate and concentration of the carrier liquid which contacts the membrane (17).

Analyseur à dispersion dynamique de la lumière qui comprend un logement (3) de cellule et une chambre (9) de cellule, la chambre (9) de cellule étant formée à l'intérieur du logement (3) de cellule de manière à être exposée à une membrane (17) qui est capable de retenir dans la chambre (9) de cellule les particules d'un échantillon introduit dans ladite chambre (9), tout en permettant à un vecteur liquide de se diffuser dans la membrane à l'intérieur et à l'extérieur de la chambre de cellule; une source de lumière, un guide d'ondes (37, 39) optique capable d'exposer les particules à une source de lumière et capable de recevoir la lumière dispersée par les particules dans la chambre (9) de cellule et la lumière réfléchie par l'interface guide d'ondes-solution; et une pompe destinée à réguler le débit et la concentration du vecteur liquide qui est en contact avec la membrane (17).

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