Hach AutoCAT 9000 - Page 114

Sulfite
Sulfite
Page 112
50081_Sulfite_Back.fm
1. Turn the instrument on
if necessary and access the
Methods menu.
Press
2 to choose
Select Method.
2. Highlight Sulfite.
Press
CHECK MARK
to validate.
3. Press 1 to select
Run method.
Note: This method uses the
5.64 mN PAO titrant. See
Software Setup for Titrant
Installation on page 38.
4. Measure 200 mL of
sample solution with a
250-mL graduated cylinder
and transfer to a 250-mL
beaker with the specified
magnetic stir bar.
5. Pipet 5.00 mL of
oxidant (0.0282 N iodine)
and swirl to mix.
Place the sample onto the
AutoCAT 9000
stirrer platform.
Note: Depending on sulfite
concentration, the titration may
yield higher results for sulfite
due to iodine demand. See
Table 1 on page 116 for
suggested spike volumes.
6. Verify User.
Press
1 to confirm.
Press the
CHECK MARK to
enter a new user.
Note: This screen will be
skipped if the User ID has been
disabled in the Configuration
menu. See Setting a User ID
on page 27.
7. Highlight Sample ID.
Press the
CHECK MARK to
enter a new sample ID or
proceed to step 8.
8. Highlight Oxidant conc.
Press the
CHECK MARK to
enter a new oxidant
concentration or proceed to
step 9.
AutoCAT Titration Method Sulfite - Back
A t CAT Tit ti M th d T t l Cl2 B k