, Apply the CaliPhoto process defined in Appendix B in order to obtain a reference image of the Master Colour plate (Figure A15b)

, Make a good-quality image of the new colour plate, which will be used for scientific investigations

, Calibrate the image of the new colour plate using the Master Colour plate and the CaliPhoto image processing defined in Appendix C (Figure A15d)

, In case of a lost or irreversibly altered colour plate, print a new colour plate and redo steps 1 to 5

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