Lanthony Tritan Manufacturers

The lanthony tritan contains a demonstration plate and five plates for identifying and grading congenital tritan defects and acquired type 3 defects. The design consists of a square of grey dots with different lightnesses. One corner of the square contains (neutral) blue-purple dots. The blue-purple dots decrease in saturation from plates 1 to 5 to give a series of colour difference steps.