How to prepare the Iodine Clock Reaction

This is an interesting reaction where two clear solutions are mixed, then after a period of time a sudden and drastic color change occurs.

[DKDexter]

I think it would be tremendously interesting to see this reaction teamed up with The Slow Mo Guys - seeing the color change in the solution at maybe 1, 000 or 10, 000 fps, and how it spreads - does it occur simultaneously more places in the fluid, or just spread out from one place?

[aquariumsetc-og]

Very helpful, at last instructions that are clear enough to be replicated

[Drachenbauer]

at the first changing to dark blue, i thaught, it´s a video-cut...

[Camroc]

Don't do this trick on a friend if it is their water... They could drink the "water"...

[Dude]

"Now mix it thoroughly" (stirs it once) lmaooo

[samyarrafatzand]

I have a question. The values are very specific. How did you decide how much of each substance to add? For example, why use 4.1g of sodium acetate, or 0.6g of starch?

[kevrsplayer]

@nilered I was wondering why must the starch be wet before adding the boiling water. Is there a specific reason?

[tristanboi]

Is this Nile's least viewed video?😅😅