In Canada, none of the pool and spa shops carried it. I ended up getting 35% food grade peroxide at a health food store. 5 years ago, it was $17.00 for 1 liter. That amount will last a very long time if you're etching with CuCL. My bottle is still nearly full.
Message
Re: Hydrogen Peroxide Source
2011-05-06 by H1000100