SCALE - L*a*b*
The tristumulus scale expands on the
traditional Kent Jones colour scale by opening up the colour reading into
3 values covering the full colour spectrum as shown below.
The advantage of the tristimulus reading
is that it is performed on a dry flour sample. This makes it very quick
and less messy although cleanliness is a key to accurate operation.
equates to a measurement of sample lightness - and often used as a
convenient reading for whiteness similar to the Kent Jones colour
but using a zero to 100 scale where 0 equates to absolute black and 100
Normal bread flours normally read in the
80 to 92 range, 80 being a brown flour 92 being a good patent flour.
gives measurement of the red to green scale of the colour spectrum, and in
practice adds little about the flour colour measurement unless of course
foreign impurities are detected.
on the other hand the yellow to blue marker - adds a whole new area
of information that was not possible in the Kent Jones scale, as practical
experience has shown that it adds direct information about the
inclusion of bran contamination in the flour sample.
The Spectramagix software is a special
piece of data management software that adds an extra layer of data
archiving to the system. It is familiar to existing users of the
previous NCG1a analyser (now superseded by the NCG5a) and which is in
operation all over the world.
The software allows for archiving and
retrieval of data, as well as quickly customising data presentation
screens to the customers own requirements.