LaMotte 2020wi Portable Turbidity Meters - Manual (Page 44)

4. Press
ENTER
to select
Turbidity - With Blank.
Turbidity WB (F)
Scan Blank
Scan Sample
12:00:00 001/500
5. Rinse a clean tube (0290)
three times with the blank.
If samples are expected to
read below 1 NTU the meter
should be blanked with a 0
NTU Primary Standard or
prepared turbidity-free (<0.1
NTU) water. For the most
accurate results, use the
same tube for the blank and
the sample.
l
6. Fill the tube to the fi ll line with
the blank. Pour the blank
down the inside of the tube to
avoid creating bubbles. Cap
the tube.
7. Wipe the tube thoroughly with
a lint-free cloth.
44
Analysis