[Canadian Man]

Kim, That's an odd reading. how many drops did it take to turn the sollution purple? Did you shake bottle #2 very well?
I found that if i didnt shake bottle 2 enought i would get odd reading.

If i mix my IO with RO/DI (so nothing water) i get 380 mg/l calcium and 2.0meq/l alk.

I would assume with tap water it should be higher than mine came out to be.

Would be a good thing to find out.