MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Colorimeter. This device measures the colour of a liquid, in particular the hue, saturation and luminous intensity. The sample at centre is beetroot juice. It passes filtered light through the sample and the results can be transmitted to a graph plotter or computer.
Model release not required. Property release not required.