LaMotte SMART 2 - Manual (Page 200)

þ Note: Invert slowly and completely for accurate results. Hold tubes with
caps up. Invert the tube and wait for the air bubble to flow to the bottom
of the tube. Turn the tube upright and wait for the air bubble to return to
the top of the tube. This is one inversion.
23. Wait 5 minutes.
24. Wipe the tubes with a damp towel to remove fingerprints and smudges.
Wipe with a dry towel.
25. Insert the blank tube into the chamber. Select SCAN BLANK. Remove the
blank tube from the colorimeter.
26. Insert the sample tube into the chamber. Select SCAN SAMPLE. Record
the result as Total Nitrogen in mg/L N.
27. Press
OFF button to turn the colorimeter off or press EXIT button to exit
to a previous menu or make another menu selection.
þ NOTES: For greater accuracy, use laboratory grade pipets.
To order reagent refills, Order Code R-4026.
Nitrogen, Total 4/4 Smart2 TEST PROCEDURES 11.04