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Title: Iodine test for starch
Caption: Iodine test for starch. Iodine test is used to determine presence of starch. Elemental iodine reacts with starch and produces purple-black colour. Typically used is Lugol's solution (Lugol's iodine) which is an aqueous solution of iodine and potassium iodide. Here Lugol's solution is used on a piece of wheat bread.
Credit: Album / Turtle Rock Scientific/SCIENCE SOURCE
Image size: 5164 × 3433 px | 50.7 MB
Print size: 43.7 × 29.1 cm | 2033.1 × 1351.6 in (300 dpi)