I picked up some fine screen at a metal recycler. It looks like stainless and is non-magnetic. Are there any good tricks to identify whether it is stainless steel, or some other metal? I am thinking about using it in homebrewing equipment.
One could not be a successful Leftwinger without realizing that, in contrast to the popular conception supported by newspapers and mothers of Leftwingers, a goodly number of Leftwingers are not only narrow-minded and dull, but also just stupid. Gunner Asch
A very non-technical way would be to drop a piece in a glass of beer and see whether it is affected. If it stays bright and clean, and doesn't develop any crud or sludge, I'd say you are good to go. If you want to be more thorough, try it in several household products, such as vinegar, drain cleaner, cola, etc, and see whether it is affected by any of them.