Hach-Lange 2100 AN Laboratory Turbidimeter User Manual - Manual (Page 4)

Clean the sample cell ...............................................................................................................................................................18
Indexing a single sample cell ....................................................................................................................................................19
Matching sample cells ..............................................................................................................................................................21
Prepare dilution water ...............................................................................................................................................................23
Prepare the sample ..........................................................................................................................................................................23
Prepare a representative sample ..............................................................................................................................................23
Remove air bubbles from the sample .......................................................................................................................................23
Apply a vacuum .................................................................................................................................................................23
Use an ultrasonic bath .......................................................................................................................................................23
Apply heat..........................................................................................................................................................................24
Prevent condensation on a sample cell ....................................................................................................................................24
Measure over-range samples ...................................................................................................................................................24
Sample dilution ..................................................................................................................................................................24
Turbidity measurement ....................................................................................................................................................................25
Measurement notes ..................................................................................................................................................................25
Turbidity measurement procedure ............................................................................................................................................26
Absorbance and transmittance measurement .................................................................................................................................27
Measurement notes ..................................................................................................................................................................27
Absorbance and transmittance measurement procedure .........................................................................................................28
Color measurement .........................................................................................................................................................................29
Measurement notes ..................................................................................................................................................................29
Color measurement and calibration procedure .........................................................................................................................30
Measurement techniques .................................................................................................................................................................32
Manual or automatic ranging ....................................................................................................................................................32
Signal averaging on or off .........................................................................................................................................................32
Ratio on or off...........................................................................................................................................................................32
Using the air purge system .......................................................................................................................................................33
Using a flow cell ........................................................................................................................................................................33
Install a flow cell ................................................................................................................................................................33
Clean a flow cell assembly ................................................................................................................................................34
Flow cell maintenance .......................................................................................................................................................34
Flow cell operation .............................................................................................................................................................34
Flow cell storage ................................................................................................................................................................34
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