Linearity, multichannel analyser

AT/T measurements over the entire pulse bandwidth are performed using an optical multichannel analyser. In all measurements, the maximum signal is a few percent and linearity is verified to avoid saturation effects. 

A large number of routine clinical chemistry laboratories perform analyses with multichannel analyzers of both the continuous-flow and the direct-sample type. Various types of spectrophotometric reference materials have been recommended to validate the photometric accuracy and linearity, wavelength accuracy or stray light radiation of photometric systems used for clinical analyses. In this respect, much has been done in the national area. The problem we are facing now concerns the required reference materials to be used for the validation of the concentration accuracy of this instrumentation, so widely used in clinical chemistry laboratories. 

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