Gambro Ab

Bengt G Paulsson

Lars-Goran Olsson

Ulf T Nylen

Roland J Andersson

Lars A Qvarnstrom

Rolf H Wichers

A method and apparatus is provided for measuring the content of a compound in a liquid medium, and which is particularly useful for measuring the concentration of a low molecular weight compound in a complex medium in which there is provided a dialyzer in contact with the complex fluid medium and through which dialysis fluid is conducted to receive by diffusion a portion of the low molecular weight compound to produce a dialysate. The dialysate with the low molecular weight commpound to be examined is first conducted through a venting device for removal of gaseous particles therefrom before conduction through a reaction chamber containing enzymes for promoting the conversion of the low molecular weight compound in the dialysate into a converted reaction product. The dialysate is then conducted from the reaction chamber to a measuring unit for measuring the concentration of the converted reaction product in the dialysate conducted from the reaction chamber, the concentration of the converted reaction product being representative of the content of the low molecular weight compound in the complex fluid medium.

Method and apparatus for the measurement of the concentration of a

A flow meter is provided for measuring the flow rate of fluid through a conduit having an inlet and an outlet, which includes a measuring chamber having a float disposed therein for movement in response to fluid flow, and a detector for detecting the movement of the float in the measuring chamber. Various devices are provided for controlling the path of fluid flow from the conduit outlet to the conduit inlet, which includes apparatus for allowing fluid to flow from the outlet through the measuring chamber in a first direction so as to move the float in the first direction past the detector, and for also allowing fluid to flow from the outlet through the measuring chamber in a second direction so as to move the float in the second direction past the detector. Apparatus is connected to the detector for measuring the rate of fluid flow in response to the movement of the float in the first and second directions.

Growing community of inventors

Lund, Sweden

Bengt G Paulsson