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3D3DDrain opener (foaming).
This is sodium hydroxide-based drain opener with a twist. See the little shavings? Those are probably either magnesium or aluminum, which will generate hydrogen gas when the sodium hydroxide is dissolved in water, creating a foaming action. At least, I think that's the idea.
Source: Farm & Fleet
Contributor: Theodore Gray
Acquired: 28 June, 2009
Text Updated: 29 June, 2009
Price: $10
Size: 2"
Purity: 56%