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Phosphorus, Reactive
5.
Fill this rinsed
cylinder to the 25-mL
mark with sample.
9.
Add 1.0 mL of
prepared Ascorbic Acid
reagent to one of the
flasks with a Repipet Jr.
Dispenser. Swirl to mix.
The remaining flask will
be the blank.
13.
Pour the contents of
the second flask into the
Pour-Thru Cell.
After the flow stops,
touch
. Results will
Read
3–
appear in µg/L PO
.
4
Phosphorus, Reactive
Page 2 of 6
6.
Pour the contents of
the 25-mL cylinder into
one of the flasks.
10.
Touch the timer icon.
Touch
.
OK
A five-minute reaction
period will begin.
14.
Flush the Pour-Thru
Cell with at least 50 mL of
deionized water
immediately after use.
7.
Measure a second
25-mL portion of sample
into the graduated
cylinder and pour the
contents into the second
flask.
11.
When the timer
beeps, pour the contents
of the flask that contains
the blank into the
Pour-Thru Cell.
PhosphorusReac_PT_Low_ASC_Eng_Ody.fm
8.
Add 1.0 mL of
Molybdate reagent to
each flask using a
Repipet Jr. Dispenser.
Swirl to mix.
Zero
12.
After the flow stops,
touch
.
Zero
The display will show:
3–
0 µg/L PO
4
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