Phosphorus, Total
Phosphorus, Total
Page 2 of 6
PhosphorusTot_UniCell_Other_APD_Eng_Ody.fm
5. Place the vial into the
Reactor Block. Heat at
100 °C for 60 minutes.
6. After the 60-minute
heating period, carefully
remove the hot vial from
the reactor. Place it in a
tube rack and cool to room
temperature (15–25 °C).
7. Pipet 0.5 mL of
Reagent B (HCT 121/
122 B) into the cooled
sample vial.
Close the Reagent B bottle
immediately after use.
8. Screw a grey
UniCap C (HCT 122 C)
onto the sample vial.
9. Invert the sample vial
repeatedly until the solid
reagent in the cap is
dissolved.
10. Touch the timer icon.
Touch
OK.
A 10-minute reaction
period will begin.
11. Wipe the outside of
the zero (white cap) and
sample vials with a damp
cloth followed by a dry
one, to remove finger-
prints or other marks.
12. Install the 16-mm cell
adapter.
Note: See Section 2.6 Sample
Cell Adapters in the Instrument
Manual for adapter installation
details.
When the timer beeps,
place the zero vial into the
cell adapter.
13. Touch Zero.
The display will show:
0.0 mg/L PO
4
3–
Underrange
14. Place the prepared
sample vial into the cell
adapter.
15. Touch Read.
Results will appear in
mg/L PO
4
3–
.
HRS MIN SECHRS MIN SEC
Zero
Read
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