Hach HQ11d User Manual page 34

Figure 18 Calibration history report
1 Report type (CH=calibration history)
2 Parameter (pH, LDO, etc.)
3 Time of calibration, prefaced by "CAL" and displayed as hh:mm in 24 h (or user-
defined) format
4 Probe model
32 English
5 Date of calibration (DD-MM-YY or user-defined format)
6 Probe serial number (a "<" or ">" on the HQ40d meter indicates the probe
position).
7 Calibration slope/ratio/constant
8 Offset—contents vary depending on type of parameter and user settings. May
be blank.