testing coolant for voltage - electrolysis

[TA_C10]

I have completely flushed this used engine several times before connecting to new radiator.

I am concerned that the readings went up in my tests when I was lead to believe by adding antifreeze the additives would help bring the voltage readings down...

What are your thoughts on this? Do I have a problem?



This is my reading with distilled water only.





This is my reading after adding 1 gallon of pure antifreeze(not 50/50) to my existing distilled water(removed 1 gallon of water first yes).