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Subject: Re: [Homebrew_PCBs] Exposing Photoresist and Some Boards I have built

From: Russell Shaw <rjshaw@...>
Date: 2008-02-18

Myc Holmes wrote:
> According to the Arm and Hammer website, Super Washing soda is Sodium
> Carbonate.
>
> This is different than Baking 'soda -- SodiumBiCarbonate.

SodiumBiCarbonate (NaHCO3) is actually sodium-hydrogen carbonate because one
sodium (Na) is replaced with a hydrogen. Sodium Carbonate is Na2CO3.