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10. Rinse a clean tube (0260), or the
same tube, three times with the
sample.
11. Fill the tube to the fill line with the
sample. Pour the standard down the
inside of the tube to avoid creating
bubbles. Cap the tube.
12. Wipe the tube thoroughly with a lint-
free cloth.
13. Open the meter lid. Insert the tube
into the chamber. Align the index line
on the tube with the index arrow on
the meter. Close the lid.
14. Press
ENTER
and scan the sample. The screen will
display Scan Sample and Scan Done
for about 1 second. The result will
appear on the screen.
"Overrange" will be displayed if
the reading is out of range. Dilute
the sample or select a mode that
is appropriate for the range of the
sample.
Press
Print. Press ENTER to print to the BLE
Mobile Printer (Code 5-0067).
NOTE: The meter will remember the last scanned blank reading. It is not necessary to scan a blank each
time the test is performed. To use the previous blank reading, instead of scanning a new one, scroll to
Scan Sample and proceed. For the most accurate results, the meter should be blanked before each test
and the same tube should be used for the blank and the sample.
„ DILUTION PROCEDURE
If a sample is encountered that is more than 2000 NTU or FNU, a careful dilution with 0 NTU/
FNU or very low turbidity water will bring the sample into an acceptable range. However,
there is no guarantee that halving the concentration will exactly halve the NTU or FNU value.
Particulates often react in an unpredictable manner when diluted.
to select Scan Sample
or
to scroll to
Turbidity WB (N)
0.99
Scan Blank
Scan Sample
12:00:00 p
41
NTU
1/500
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