Figure 6. The ammonia fountain experiment with the fluorescent indicator phloxine B (left), quinine and eosin Y (middle) as well as sodium 4-aminonaphthalene-1-sulfonate and phloxine B (right). (Photographs: Ducci)

From

Fascinating school experiments with fluorescent dyes

Matthias Ducci

World Journal of Chemical Education. 2023, 11(3), 74-79 doi:10.12691/wjce-11-3-9