7 MAINTENANCE .................................................................. 20
7.1 Error message ................................................................................. 20
7.2 Meter maintenance.......................................................................... 21
7.3 Self-diagnosis .................................................................................. 21
7.4 Recover factory settings .................................................................. 21
8 TECHNICAL DATA .............................................................. 22
8.1 Specifications .................................................................................. 22
8.2 Compliance ..................................................................................... 23
9 Appendix ............................................................................ 24
9.1 pH Buffer Groups ............................................................................ 24
9.2 Conductivity standards .................................................................... 25
9.3 Examples of temperature coefficients (α-value) .............................. 26
9.4 Conductivity to TDS conversion factors .......................................... 26
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