Why does my Hach 2100N show Err02 during calibration?
- JjonathanstokesAug 21, 2025
The Err02 error indicates that two calibration standards have the same value, or their difference is less than 60.0 NTU, or standard 1 is too low (less than 10 NTU). Recheck the preparation of the standards and repeat the calibration.