LaMotte LTC3000wi Turbidity & Chlorine Lab Meter - Manual (Page 68)

11. Press
ENTER
to select Scan
Total Chlorine. The screen
will display Reading... for
about 1 second. The result
will appear on the screen.
Record the result as Total
Chlorine.
Total Chlorine (L)
1.25
ppm
Scan Free Chlorine
Scan Total Chlorine
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12. Subtract the Free Chlorine reading from the Total Chlorine reading
to obtain the concentration of Combined Chlorine.
Total Chlorine - Free Chlorine = Combined Chlorine
*Warning: Reagents marked with an * are considered to be potential
health hazards. To view or print a Material Safety Data Sheet (MSDS)
for these reagents go to www.lamotte.com. To obtain a printed copy,
contact LaMotte by e-mail, phone or fax.
NOTE: For the most accurate results, samples over 6 ppm chlorine
should be diluted with chlorine demand free water and re-tested.
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 reacted sample.
CHLORINE: ANALYSIS - DPD LIQUID REAGENTS
Total Chlorine
The default units are ppm and the default calibration curve is for DPD
Tablet reagents. For the most accurate results, a user calibration should
be performed. The letter (L) in the menu bar indicates that the meter
is in the liquid mode. To use tablet DPD reagents, see the Set Up
instructions.
1. Press and briefl y hold
to turn the meter on. The
LaMotte logo screen will
appear for about 3 seconds
and the Main Menu will
appear.
Main Menu
Measure
Data Logging
Options
Run PC Link
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68
Chlorine Analysis