Techkon SpectroDens Manual page 12

How to measure
After switching on SpectroDens, it is instantly ready to measure. Just position the
measurement aperture on top of the measurement sample and press shortly with
the index finger the green measurement button. Within one second the resulting
measurement value will appear on the display of the device.
Please ensure that the device always has a firm stand on a flat surface. There must
not be a distance between the measurement head and the sample where light could
pass through, because this can influence the measurement. On the bottom of the
device there are anti-slip rubbers which prevent the device from being moved during
a measurement.
The color of the background material underneath the measurement sample can have
an influence on the measurement result. Different technical standards describe which
backing material to use. In the printing industry the following procedure is widely
used: White backing for single printed papers and black backing for double printed
sheets in order to avoid that the back printed side might shine through the paper and
influence the measurement.
Page 12 Manual TECHKON SpectroDens Chapter 1 – How to use SpectroDens