Patent ID: 9719914
Date: 2017-08-01
CPC Classifications: B01L,G01N

Claim:
1. A portable instrument, comprising: a housing for receiving at least one cuvette, wherein each cuvette comprises a fluid channel therein; a pump capable of creating a differential pressure in the fluid channel of the at least one cuvette to move a sample fluid into and/or through the fluid channel of the at least one cuvette; one or more processors; and a program storage device storing program code executable by the one or more processors, said program code comprising: program code configured to operate the pump and position a sample fluid within the fluid channel of a cuvette; program code configured to transmit light through an optical chamber; program code configured to measure received light that has been transmitted through the optical chamber; program code configured to compare the light measured to one or more thresholds; and program code configured to determine a leading and or a trailing edge of the sample fluid within the fluid channel based on a comparison of the light measured and one or more thresholds.