Egg yolk colorimetric fan/egg yolk colorimetric card/Roche colorimetric fan/egg yolk color tester

Yoll Color Chart

DSMYolk colorimetric fan (formerly Roche yolk colorimetric fan) is16Grade color index, used to distinguish the yolk color density,It is part of the quality standard for carotenoid pigmentation in egg yolks and is widely used in the poultry industry around the world.

The colorimetric fan should be placed directly above the yolk and viewed vertically from above, with the numbered side facing down, and the tester should always face the side of the colorimetric fan without numbers, and display the numbers to the assistant for recording. When measuring different eggs, the colorimetric fan should be turned off and then turned on each time to ensure the independence of each measurement.

Generally speaking,Chinese consumers prefer eggs with dark yolk color, and some group standards stipulate that the colorimetric value of the yolk colorimetric fan should be≥7