Figure 8. Iodine-starch complex alginate beads in alkaline sodium thiosulfate solution (left: about 2 min following the addition of the beads to the solution; right: after about 7 min). (Photographs: Ducci)

From

Redox Reactions in Sodium Alginate Beads

Matthias Ducci

World Journal of Chemical Education. 2019, 7(2), 40-44 doi:10.12691/wjce-7-2-2