4.4
Checking the optical system with Reflotron Check
Reflotron Check is designed for checking the optical system of
Reflotron Plus.
The procedure has already been described (R see “Practice with
Reflotron Check” in Section 2).
Note on evaluation
Reflotron Plus measures the amount of light diffusely reflected by the
strip at each of the three wavelengths and displays the reflectance
values per mil (‰).
The meanings of the three numerical values displayed are as follows:
First number (638): reflectance in ‰ (63.8%) at 642 nm.
Second number (639): reflectance in ‰ (63.9%) at 567 nm.
Third number (633): reflectance in ‰ (63.3%) at 951 nm.
The values must lie between the minima and maxima specified on the
label, x
–
being the target value.
If one or more values are outside the confidence limits, proceed as
follows:
– clean the transporter and the heaters (see Section 4)
– repeat the measurement with an unused dust-free control strip.
If the values now lie within the specified confidence limits, the system
can be used.
If this is not the case and the value for the same wavelength is still
outside the confidence range, the optical system must be checked
before further measurements are carried out.
In this case, please contact the Technical Service Department of the
nearest Roche Diagnostics subsidiary or your authorized dealer.
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