Bio-Rad Image Lab™ Software - Manual (Page 173)

User Guide | 173
A Maintaining the GS-900
Densitometer
Regular cleaning ensures that your GS-900™ calibrated densitometer will continue
to perform optimally. This appendix explains proper care for the GS-900
densitometer.
WARNING! No user-serviceable parts are inside the GS-900 densitometer.
Refer servicing questions to Bio-Rad service personnel.
Cleaning the Outer Surfaces of the GS-900 Densitometer
During normal operation, residue can build up on the sample area.
Use a nonabrasive, lint-free towelette and a 70% ethanol solution to clean the
sample area. Avoid using excessive liquid around the power switch and connector
outlets located on the back side of the unit.
Note: Residual Coomassie stain on the sample area can affect image data. The
glass sample area should be cleaned with a 70% solution of ethanol until no
remaining stain is seen on the towelette.
Resetting the GS-900 Densitometer
If the GS-900 densitometer fails to calibrate, or you notice an uneven appearance to
the background area that has no sample, the Image Lab™ software may need to
relocate the calibration reference location and reset the flat field values.
Note: Ensure that the sample area is clean and free of scratches. Thoroughly
clean the glass sample area of any contamination and residual Coomassie