Techkon SpectroDens Manual page 45

When the solid density is measured, the
compliance with the tolerances is checked.
In this example the measurement has been
taken on a black solid patch.
At the same time the recommendation how
to adjust the density is calculated.
The smallest possible ∆E*-value is calculated
in advance.
The measurement function ISO-Check
recognizes, whether the given tolerances can
be achieved with the set of print ink in use. If
this is not the case, another set of print ink
must be used.
Manual TECHKON SpectroDens Chapter 2 – Measurement functions Page 45