Standardization Process - HunterLab ColorFlex EZ User Manual

It is recommended that the ColorFlex EZ be standardized every four to eight hours. The
instrument will automatically prompt for standardization after the Standardization Interval set
in Global Options has elapsed, so it is a good idea to enter 4 to 8 hours as the Standardization
Interval.
Also standardize the ColorFlex EZ any time there is a significant change (greater than 5°F) in
ambient temperature. For example, if the ColorFlex EZ is moved an air-conditioned office to an
outdoor site that is 90°F, standardization should be repeated once the instrument has had a
chance to stabilize under the new temperature. Also standardize the instrument any time there
is a change in the optical path, such as changing from using the standard port to the sample cup
port.
Also, it is important that the standards used in standardization be treated carefully. Tiles must
be kept clean and in good condition. If there is any doubt about the standards being clean,
clean them as described in the Maintaining and Testing ColorFlex EZ chapter.

Standardization Process

Standardization of a ColorFlex EZ is performed as follows:Remove the calibration tiles from the
standards box. Check that the tiles are clean and free of dust and scratches. If they are dirty
(including marked with fingerprints), clean them as described in Maintaining and Testing
ColorFlex EZ.
Select STANDARDIZE from the ColorFlex EZ's main menu by moving the cursor
1.
highlight to its position using the UP and DOWN arrow buttons and then pressing
the GO button. The Standardization screen appears, prompting for the Black Glass.
ColorFlex EZ User's Manual Version 2.2
Figure 5. Time Since Last Standardization
Figure 6. Set Standardization Interval
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