| abstract |
Luminescent material markers are insufficient to be optically detectable in ambient light, but are nondestructively optically detectable in industrial process materials in their original position in the field or field Provides a method for marking industrial process materials, including traces that are sufficient, and selective incorporation into industrial processing materials. A trace amount of luminescent marker 1 is used to track, identify or authenticate industrial process material 7 in at least one of material control, inventory control, inventory control, process control, logic control, quality control, and contamination control. Used for. [Selection] Figure 1 |