I love this thing, I made my own battery acid mix using Kleen-Out Sulfuric Acid Drain Opener and distilled water, and needed to test the electrolyte level this worked great. It was able to tell me the exact reading for my mix before and after I put the new mix in my old battery. I bought Alum to experiment with and when it didn't work, I did my next experience with sulfuric acid and my battery works now. I tested it first with water and it tells you when the mixture is just water.
Rating:
[5 of 5 Stars!]