LaMotte 1200-UDV-CL - Manual (Page 3)

TOTAL RESIDUAL CHLORINE
COMBINED CHLORINE
Subtract the Free Available Chlorine reading from the Total Residual Chlorine reading
to determine ppm Combined Chlorine (Monochloramine, Dichloramine, and Nitrogen
Trichloride) present in the water sample.
Fill the Water Sample
Bottle (28021) with
sample water. This will
be used to dispense
sample water for the
tests.
Push the READ
button to turn the
meter on. Press the
ZERO button
and hold it for 2
seconds until
bla
is
displayed. Release
the button to take a
zero reading
(0 ppm). Remove
the vial.
Insert the vial
into the
chamber.
Close the lid.
Push the
READ button.
Record results as
ppm Total
Residual Chlorine.
Rinse and fill
an empty vial
(28560) with
3 mL sample
water. Wipe
dry.
7. 8.
5.
3.
1. 2.
4.
6.
Use the syringe
(1184) to add 3 mL
of sample water to a
Total Chlorine Unit
Dose Vial (4312).
Invert 3 times to mix.
Wipe vial dry. Wait 2
minutes for full color
development*.
Insert the vial
into the
chamber.
Close the lid.
This vial is the
blank or zero.
I200
COLORIMETER
• • • • • • • • • • • • • • • • • •
READ
bla
ZERO
ZERO
I200
COLORIIMETER
• • • • • • • • • • • • • • • • • •
READ
2.55
3
*For wastewater samples, Standard Methods for the
Examination of Water and Wastewater
recommends
waiting 2 minutes for full color development.
L Mott
L Mott