57 vwr.com Instruction manual VWR
®
Imager Chemi Premium
GRID MENU
CONTROLLING THE IMAGE SATURATION
Select the
Show Saturation
button
. The
Saturation
function can be used to check if areas of the
image are going to be over-exposed; over-exposed white bands will be highlighted in red on the image,
over-exposed black bands will be highlighted in blue on the image. This function is useful if the
Select
AutoExpose Area
function has been used. Please note that saturated bands are not quantifiable.
SAMPLE IMAGE ZOOMING
The
Digital Zoom
slider
allows you to zoom in or out of the displayed image.
Dragging the slider towards the
+
sign zooms in, dragging the slider towards the
-
sign
zooms out. Zooming in or magnifying an area of the image allows you to align the
sample more accurately, using the grid overlay.
USING DYNAMIC FIELDING TO IMPROVE SAMPLE IMAGE QUALITY
The Dynamic Fielding option allows you to correct the image for uneven lighting. This can cause problems
when quantifying bands or spots across a large sample. The image of the dynamic field is normalised for
light illumination. This normalisation is then applied to the gel image, such that uneven light illumination
generated by the light source is addressed. For details of Dynamic Fielding screens and lighting
combinations refer to
Recommended Light / Dye / Accessory and Other Application Tables
.
In the
Dynamic Fielding
box check the
Use Dynamic Fielding
checkbox.
Follow the onscreen messages.
TYPICAL DYNAMIC FIELDING MESSAGES