Hach-Lange 2100 AN IS 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 .........................................................................................................27
Measurement techniques .................................................................................................................................................................28
Manual or automatic ranging ....................................................................................................................................................28
Signal averaging on or off .........................................................................................................................................................28
Ratio on or off...........................................................................................................................................................................29
Using the air purge system .......................................................................................................................................................29
Using a flow cell ........................................................................................................................................................................30
Install a flow cell ................................................................................................................................................................30
Clean a flow cell assembly ................................................................................................................................................30
Flow cell maintenance .......................................................................................................................................................31
Flow cell operation .............................................................................................................................................................31
Flow cell storage ................................................................................................................................................................31
Using a manual flow cell ....................................................................................................................................................31
Using an automated flow cell .............................................................................................................................................31
Measurement notes ...........................................................................................................................................................32
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