YSI pHotoFlex Series - Manual (Page 26)

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Note: Before using the test with your photometer for the first time, determine the reagent blank
value.
YSI model no.: Cl2-4 TP
Category: RT (reagent test)
Cell: 28 mm
Measuring range: 0.5 - 5.0 mg/l Cl
2
Display in mmol/l possible
Check the pH value of
the sample.
Required range: pH 6-7.
Correct with diluted
sodium hydroxide
solution or sulfuric acid
as necessary. Pipette 10.0 ml of
sample into an empty
beaker. Add the contents of a
VARIO Chlorine Total-
DPD F25 ml powder
pack and dissolve them
by stirring. Add 15.0 ml deionized
water with a pipette and
mix. Fill an empty cell with the
prepared sample and
close it with the screw
cap.
Insert the cell in the
photometer cell shaft
and start measurement.
Notes:
• We recommend to determine a new reagent blank value (deionized water instead of sample) for each test package started.
• The test sample should be pink. Very high chlorine concentrations in the sample cause yellow solutions and too low mea-
sured values. Dilute the sample in this case.
• Each time after determining total chlorine, rinse the cell with sulfuric acid 25 % and then several times with distilled water.
pH 6-7
Chlorine (total) vario
Program no.
328
*RN328*