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Metal Salts

Metal salts are produced in an Acid Bath. You will need the Neutralization tech to construct and use the acid bath.

Combine 1 acid, 1 potash, 25 water in jugs and 7 of the appropriate metal in the acid bath to begin the process. As the acid reacts with the metal over time, precipitate will be generated. The longer the metal soaks in the acid, the more precipitate (and salts) will be produced, until you choose to Filter the Precipitate. This filters the metal salts from the bath, and ends the process.

More information may be found under the entry for Acid Bath.

Uses

Various metal salts are used in the production of stars for the Test of Pyrotechnics.
Salts Of Iron are used to make Ink.
Metal salts are used to plate (and purify) Treated Metal in a Chemical Bath.

Notes

You must be holding some sort of metal in your inventory to see the option to make salts.