I am new to making my own PCBs and just got a bottle of Ferric chloride and would like to give this a try but have two questions about safety/disposal. I have seen many articles about this stuff (and videos) most were not wearing a respirator and some were doing it indoors, should I use a mask even while outside? What about proper disposal of Ferric chloride water that has been used for rinsing, is this safe to poor down the drain? (Not the actual acid bath)
Thanks.
Thanks.