The Lovibond “52 Series” slides for the measurement of the colour of beers, malts and caramels have been highly successful in the past, but the series was chosen so early in the development of the science of colour measurement that it suffers from three serious defects—irregular colour proportions, irregular units of colour, and insufficiency of red in the higher colours. Tests have been made to establish (a) the curve of colour proportions; (b) the most desirable size of colour unit; (c) the desirable limits for the range of units; (d) the most desirable method of comparison between slides and solutions; (e) the most desirable source of illumination. As a result, recommendations are made relating to a revised Lovibond scale and to the way in which it should be used. The process employed in this standardization would appear to be applicable to the development of glass slides for colour measurement in other fields, e.g. oils or shellacs.
No takes yet. Share an insight, caveat, or question.
L. R. Bishop (1950) studied this question.