Updated disposal (markdown)
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[[_TOC_]]
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## Disclaimer
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# Disclaimer
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I am no where near qualified enough to claim these notes are accurate. When in doubt, take the waste material to your local disposal.
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### Sodium metasilicate
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## Sodium metasilicate
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Safe to mix with water and pour down the drain as far as I can find.
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### Sodium hydroxide
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## Sodium hydroxide
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Can be neutralised with an acid, which we should have:
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### Ferric chloride
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## Ferric chloride
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Besides deactivating the acid, there's also the issue of the copper dissolved in the spent ferric chloride which is detrimental to the environment.
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These instructions were found on [[https://wiki.london.hackspace.org.uk/w/index.php?title=Project:Deactivating_a_ferric_chloride_solution&redirect=no]]. I've copied them here in case the site goes down:
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