There are still many “toxic” and environmentally-sensitive chemicals used today and one of those is etching solution.
For those of you who don’t know, etching solution is basically solution for circuit boards and PCBs. Circuit boards and PCBs are practically everywhere including your car, refrigerator, and even kid’s toys.
Although many countries have banned use of lead in PCBs, there still exists another problem for hobbyists, who use etching solutions to make their own PCB boards for testing.
For those hobbyists who do this at home, having this toxic etching solution might not be such a great idea if they have any kids around and besides that, it’s simply not great for the environment.
There’s a DIY non-toxic etching solution though that you can make, it uses white vinegar, hydrogen peroxide, and salt. If you are looking for alternative ways to make your own DIY etching solution, check out this great article here.