Bio-Rad Model EG-1 Econo™ Gradient Monitor - Manual (Page 13)

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4. Pass buffer B through the flow cell until the con-
ductivity reading stabilizes. (A flashing CAL indi-
cates the monitor is calibrating.)
5. Press the CAL key to accept the conductivity
value for buffer B.
Note: If the 3-digit display reads “Err”, the conduc-
tivity valves for buffer A and B are too close
together to use the Gradient mode. Press the
Mode Selector key to cancel calibration
and use the Conductivity mode.
When steps 1-5 above are complete, the Bar Graph will
indicate the buffer conductivity in the flow cell relative to the conductivity
values set for buffer A and B. The gradient monitor output is automatically
calibrated to 0 to 1 V based on the values set for buffer A and B. (Insure
that the recorder input is set to 1V full scale.)
If the conductivity of the buffer in the flow cell falls outside the values
set for buffers A and B, a red indicator light will appear on the Bar Graph.
Section 7
Care and Maintenance
The Model EG-1 Econo Gradient Monitor requires very little mainte-
nance to assure reliable operation. Following are general procedures for
maintenance of the control unit and flow cell.
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