Hach-Lange 2100 N IS Laboratory Turbidimeter User Manual - Manual (Page 5)

Prepare formazin standards .....................................................................................................................................................29
Calibration notes .......................................................................................................................................................................30
Formazin calibration procedure ................................................................................................................................................31
Making 4000-NTU formazin stock solution ...............................................................................................................................32
Calibrate the turbidimeter with user-selected formazin standards ...................................................................................................32
Prepare formazin standards – user selected ............................................................................................................................33
Change the calibration points ...................................................................................................................................................33
Maintenance
...................................................................................................................................................................................33
Clean the instrument ........................................................................................................................................................................33
Replace the LED light source ..........................................................................................................................................................33
Replace a fuse .................................................................................................................................................................................33
Troubleshooting
..........................................................................................................................................................................34
Error codes .....................................................................................................................................................................................34
Diagnostic codes ..............................................................................................................................................................................35
Delete calibration data .....................................................................................................................................................................35
Flashing 9s .......................................................................................................................................................................................35
Flashing 0s .......................................................................................................................................................................................35
Replacement parts and accessories
...............................................................................................................................36
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