Modified siphons for improved metering precision

Details Modified siphons for improved metering precision Modified siphons for improved metering precision

G - Physics

01

F

G01F 11/10 (2006.01) B01L 99/00 (2010.01) B04B 5/04 (2006.01) G01N 21/07 (2006.01)

Patent

CA 2192196

The present invention provides centrifu- gal force rotors for delivering a premeasured volume of liquid to a chamber in the rotor. In particular the rotors comprise siphons (134) for delivering a premeasured volume of liquid be- tween a first and a second chamber (136) in the rotor. The siphons (134) of the invention are designed such that the inlet (138) of the siphon on the first chamber is radially outward of the siphon outlet (139) on the second cham- ber (136). The first chamber is emptied to a level equivalent to the radial position of the siphon outlet (139).

La présente invention concerne des rotors à force centrifuge servant à amener un volume prémesuré de liquide dans une chambre de rotor. En particulier, lesdits rotors comprennent des siphons (134) servant à amener un volume prémesuré de liquide entre une première et une seconde chambre (136) du rotor. Les siphons (134) selon l'invention sont conçus de sorte que l'entrée (138) du siphon de la première chambre se trouve radialement à l'extérieur de la sortie (139) du siphon de la seconde chambre (136). La première chambre est vidée jusqu'à un niveau correspondant à la position radiale de la sortie (139) du siphon.

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