Roche Diagnostics
Urisys 1100® · ≥5.7 · Operator's Manual · 9.0
6. Calibration 29
6. Calibration
The Urisys 1100
®
system is calibrated before leaving the
factory. When installed, it must be recalibrated with
Control-Test
®
M calibration strips before the first samples
are read, and thereafter every seven days. Control-
Test
®
M calibration strips consist of a grey plastic material
that is standardized to give constant, defined reflectance
readings. The purpose of calibrating the analyzer is to
compensate for aging effects that influence the optical
system and the grey reference pad in the test strip tray. If
the compensation needed is excessive, for example
because the reference pad is badly soiled, or an LED is
defective and cannot emit the required amount of light,
an error message is displayed (see below).
The Urisys 1100
®
system automatically requests a new
calibration every week. This is why, when the analyzer is
installed, the REPEAT CALIBRATION! message is
displayed following the successful self check and also
one week after the latest valid calibration.
Press the left function key (Yes) to read the START
CALIBRATION! message.
Performing a calibration
q Before calibrating, ensure that the test strip tray is
clean and dry.
r To perform a calibration
1
Remove a calibration strip from the Control-Test
®
M
container.
I Be careful not to touch the pads and do not allow
them to come into contact with urine.
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