Hach DR1300 FL, User Manual, Page: 25 / 176

Problem Possible cause Solution
The instrument
reading is
different from
the online
analyzer
reading. The sample is not a
representative sample
and is not well mixed. Make sure to get a representative
sample. Refer to the instructions in
the
Sample Collection section of the
test procedure.
The instrument
reading is
different from
the online
analyzer
reading. The grab sample was
not analyzed
immediately.
Note: The DPD method is
less accurate in the lower
ppb range compared to the
fluorescence method.
Other oxidants do not
interfere with the
fluorescence method.
Analyze the grab samples
immediately. The chlorine
concentration decreases quickly in
ultra low range chlorine samples.
Section 12 Consumables and replacement parts
W A R N I N G
Personal injury hazard. Use of non-approved parts may cause
personal injury, damage to the instrument or equipment
malfunction. The replacement parts in this section are approved by
the manufacturer.
Note: Product and Article numbers may vary for some selling regions. Contact
the appropriate distributor or refer to the company website for contact
information.
Consumables
Description Item no.
DR1300 FL Fluorescence Standards Kit 34630000
Reagent kit, ULR Fluorescence Total Chlorine,
includes:
Sample vial holder, two16-mm vials with caps and two
reagent bottles in dropper bottles
34252000
Reagent kit, ULR Fluorescence Free Chlorine, includes:
Sample vial holder, two16-mm vials with caps and two
reagent bottles in dropper bottles
34251000
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