LaMotte 1964-EPA, Руководство пользователя

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11. Record the result as Total Chlorine. T o t a l C h l o r i n e ( L )
1 . 0 0
p p m
* S c a n S a m p l e
€
1 6 : 0 2 : 1 9 0 1 / 0 4 / 0 5
12. Press
OFF
to turn the meter off or
press to exit to a previous menu
or make another menu selection.
*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 see MSDS CD
or our web site. To obtain a printed copy, contact us 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 with
tube positioning ring should be used for the blank and the reacted sample.
Dilution Procedures
Samples should be diluted with Chlorine Demand Free Water. To prepare Chlorine
Demand Free water follow the procedure in
Standard Methods for the Analysis of
Water and Wastewater .
Standard Solutions
Standard solutions should be prepared from a sodium hypochlorite solution and
chlorine demand free water. The concentration of the standards should be verified by a
Ferrous Ammonium Sulfate titration. An approximately 250 ppm chlorine standard
(Code 6973-H, 60 mL) and a Chlorine titration kit (Code 3176-01) are available
from LaMotte Company.
60 CALIBRATION & ANALYSIS • CHLORINE