Hach AutoCAT 9000 - Page 115

Sulfite
Sulfite
50081_Sulfite_Back.fm Page 113
9. Highlight Oxidant vol.
Press the
CHECK MARK to
enter a new oxidant volume
(see Table 1), or proceed to
step 10.
Note: If the sample has not
been fixed this procedure
requires the addition of oxidant
prior to analysis.
10. Highlight Volume for
Test 1.
Press
1 to confirm.
Press the
CHECK MARK to
enter a new sample volume.
11. Add 1 SwifTest
dispensation (0.1 g) of
potassium iodide (KI).
Press the
CHECK MARK to
confirm.
Note: KI is added in excess.
The precise amount added is
not crucial for the accuracy or
precision of the analysis.
12. Add one dose of pH 7.0
Phosphate Buffer.
Press the
CHECK MARK to
confirm.
Note: Phosphate buffer is
added to adjust the sample pH.
The amount used is not crucial
for the accuracy or precision of
the analysis.