Color Contrast Penetrants: Illumination (natural or supplemental white light) of the examination surface is required for the evaluation of indications. The minimum
light intensity shall be 100 fc (1 000 lx).
Fluorescent Penetrants: Black lights shall achieve a minimum of 1000 μW/cm2 on the surface of the part being examined throughout the examination.
MICRO NDT SOLUTIONS & TRAINING INSTITUTE 