Figure 7. Alginate beads loaded with starch, sodium nitrate and potassium iodide in hydrochloric acid (from left to right: some few seconds after covering with diluted hydrochloric acid; after about 30 s; after about 2 min). When the photographs were taken, the glass vessel was standing on a light panel. (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