In a blender, combine the water and the algin. Blend until smooth. Refrigerate for 48 hours until the air that was whipped into the mixture dissipates and the algin rehydrates itself.

Brown algae, especially kelp, are used to extract another gel-forming product called algin. Algin absorbs water to make gels and thick solutions and can be found in ice creams and dry baking mixes.

Brown algae is a common problem in many fish tanks, especially those that have been recently set up. It’s not dangerous to fish but can turn your beautiful aquarium into an ugly mess.

Among industrial uses of brown algae may be mentioned the kelp industries, formerly so profitable as the source of soda, and still yielding potash, iodine, and bromine.

This article was originally published with the title “ Algin: A New Substance Obtained from Some of the Commoner Species of Marine Algæ ” in SA Supplements Vol. 16 No. 396supp (August 1883 ...

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