User guide

8 | Analyzing Images
146 | Gel Doc XR+ and ChemiDoc XRS+ Systems with Image Lab Software
Volume Types
You can define the volume type (unknown, standard, or background), the quantity of
standard volumes, or enter a custom name to replace the default label.
Unknown volumes are volumes you want to quantify.
Standard volumes ar
e used for absolute quantities. See Absolute Volume Quantity
on page 148.
Background volumes ar
e used to remove the background from the calculation. The
result of volume background subtraction appears in the Adjusted Volume column of
the analysis table (Volume Table tab).
Note: This volume type needs to be assigned only when using Global
Backgr
ound subtraction.