Patent ID: 8119068

Claim:
A fluid content monitor comprising: a light transparent cuvette adapted to receive a fluid sample; a reagent container for holding a reagent; a pump adapted to pump the reagent from the reagent container to the cuvette; and a colorimeter adapted to direct light through the cuvette, receive the light passing through the cuvette, and generate a signal indicative of contents of the fluid sample based upon the received light, the colorimeter including, a body including a cuvette portal in a side of the body for removably receiving the cuvette, and a passageway extending between ends of the body and through the cuvette portal so that the cuvette is located in the passageway when placed in the cuvette portal, and a nozzle, for delivering fluid to the cuvette, removably secured in the passageway in one of the ends of the body, wherein the nozzle is adapted to engage the cuvette when the nozzle is secured in the passageway and prevent removal of the cuvette from the cuvette portal, whereby removing the nozzle from the passageway allows the cuvette to be removed from the cuvette portal; and a tube connecting the reagent container to an inlet of the pump and another tube connecting an outlet of the pump to the nozzle, said tubes creating a fluidic passage between the reagent container, the pump and the cuvette when the nozzle and the cuvette are secured in the body.