Originally Posted by Ozarkprepper
Ya, I better look into that.
I just used my tester pen on bottled water and it was reading 10.6.

The problem is clearly my tester pen.

That's the problem, always check for calibration before use. Saves a lot of headaches that way.

I went for a ME degree after I was working and in the materials class I was in the teacher gave out coupons of steel and had the class try to determine the type of steel by testing it. One of the tests was a rockwell test. I sat back and let the other kids go first (I was in my 40's). When it was my time to use it I looked for the calibration coupons to check the machine. None to be found. I asked the prof about the calibration coupons. I passed that test everybody else flunked. LOL

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