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4.3.7.4. Stability
This test takes absorbance readings during 30 minute with the lter wheel in xed position. The technician
can choose the rotor well on which he wishes to take the readings and ll it with the liquid he desires. He can
choose which wavelength he wishes to use. The test can also be performed with the lter covered. The test can
be cancelled at any time. When the readings end, the screen graphically displays the count numbers obtained
and the absorbances with regard to the corresponding base lines. The program also shows the averages and/
or standard deviations of the count numbers and the absorbances.
4.3.7.5. Repeatability moving lter wheel
This test takes absorbance readings during 10 minute moving the lter wheel randomly. The technician can
choose the rotor well on which he wishes to take the readings and ll it with the liquid he desires. The test can
be cancelled at any time. When the readings end, the screen graphically displays the count numbers obtained
and the absorbances for each lter with regard to the corresponding base lines. The program also shows the
averages and/or standard deviations of the count numbers and the absorbances for each lter.
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