Twisted13
- 29
- 13
I feel silly asking for help on what seems to be so basic yet here I am. I can not seem to get a correct measurement from my Hanna 98100 PH meter or maybe I just don’t believe my meter? I added like a drop MAYBE 1 mm to a gallon of water. Test the PH and I am getting 4.25 I tried another fresh gallon added around 1 Milimeter and got a 5.25. I then calibrated the meter (again) and opened a fresh bottle of room temp distilled water. Rinsed it with known good clean distilled water put it in the brand new gallon and got a reading of 5. Something. What am I doing wrong here surely a new bottle of distilled would read 7 or very close to it?