LaMotte LTC3000wi Turbidity & Chlorine Lab Meter - Manual (Page 61)

4. Rinse a clean tube (0290)
three times with the sample.
Fill the tube to the 10 mL line
with the sample. Cap the
tube. Dry the tube with a lint-
free cloth.
5. 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. Press
ENTER
to
scan the blank. The screen
will display Blank Done for
about 1 second and then
return to the Free Chlorine
menu.
Free Chlorine (T)
Scan Blank
Scan Free Chlorine
12:00:00 001/500
6. Remove the tube from the
meter. Add one *Chlorine
DPD #1 Instrument Grade
Tablet (6903A). Cap the tube.
Shake for 10 seconds. Invert
slowly 5 times. The solution
will be pink if Free Chlorine is
present.
7. Immediately insert the tube
into the meter. Align the index
line on the tube with the index
arrow on the meter. Close the
lid.
8. Press
ENTER
to scan the
sample. The screen will
display Reading... for about 1
second. The result will appear
on the screen. Record the
result as Free Chlorine.
Free Chlorine (T)
0.99
ppm
Scan Free Chlorine
Scan Total Chlorine
12:00:00 001/500
61
Chlorine Analysis