- Joined
- Jan 2, 2023
- Messages
- 193
- Reaction score
- 57
- Location
- United States
- What state or country do you live in
- North Carolina
I have had my refractometer to test my salinity for over a year now and it doesn't seem to hold a calibration but from use to use. What is a good one to buy I know they can be hit and miss and not hold a calibration.
