Sensor housing and reagent chemistry

摘要

A sensor comprises a sensor housing, having a channel; a porous substrate, in the channel; an analysis chemistry reagent, on the porous substrate; and a nozzle, in fluid connection with the channel. The porous substrate fills a cross section of the channel, and the cross-sectional area of the channel at the porous substrate is greater than the cross-sectional area at the nozzle.

主权项

1. A sensor for use with a cuvette, the sensor comprising:
a porous substrate having an analysis chemistry reagent; and a sensor housing comprising a sensor cap and a sensor base, wherein: the sensor cap comprises:
a first channel; anda first interlocking region, the first channel having a first diameter at the first interlocking region; and the sensor base comprises:
a second interlocking region to mate with the first interlocking region;a second channel adjacent the second interlocking region, the second channel holding the porous substrate and in fluid communication with the first channel, the second channel having a second diameter greater than the first diameter;a third channel coupled to and in fluid communication with the second channel, the third channel having a third diameter smaller than both the first diameter and the second diameter; and,an outer housing wall to fit over and around a perimeter of an upper chamber of the cuvette.