Some folks have raised the issue of disposal of surplus sulfuric acid, believing it to be a problem. You, George, have enough of a chemistry background to know that small amounts of acid can be neutralized with baking soda or baking powder from your kitchen. Once neutralized, the acid is totally safe in all ways. You can wash your hands with it, or sprinkle it on your tomato plants. A bit of sulfate will do them some good.