G - Physics – 01 – J
Patent
G - Physics
01
J
G01J 3/02 (2006.01) G01N 21/15 (2006.01) G01N 21/25 (2006.01) G01N 21/93 (2006.01)
Patent
CA 2701425
The invention relates to a method for the detection of contaminations of an optical measuring cuvette of a spectrophotometer, preferably an oximeter for determining hemoglobin derivatives, in which measuring cuvette, in addition to at least one sample measurement to obtain a sample spectrum I(.lambda.), at least one reference measurement is performed using a reference liquid to obtain a reference spectrum I0(.lambda.). According to the invention, the reference spectrum I0(.lambda.) is compared to a known target spectrum I0soII(.lambda.) which is associated with the measuring cuvette, comparison parameters being obtained, it being decided automatically whether a contamination of the measuring cuvette exists as a function of predefined threshold values of the comparison parameters.
F. Hoffmann La-Roche Ag
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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