349
Using AccuVac Ampuls
1. Enter the stored
program number for
reactive phosphorus-
ascorbic acid method.
Press:
PRGM
The display will show:
PRGM ?
Note: For most accurate
results, perform a Reagent
Blank Correction using
deionized water (see
Section 1).
2. Press: 79 ENTER
The display will show
mg/L, PO4 and the
ZERO icon.
Note: For alternate forms
(P, P
2
O
5
), press the CONC
key.
3. Fill a sample cell
(the blank) with at least
10 mL of sample.
Collect at least 40 mL
of sample in a 50-mL
beaker.
Note: For samples with
extreme pH, see
Interferences.
Note: Clean glassware
with 1:1 HCl. Rinse again
with deionized water. Do
not use detergent
containing phosphates to
clean glassware.
4. Fill a PhosVer 3
Phosphate AccuVac
Ampul with sample.
Note: Keep the tip
immersed while the ampul
fills completely.
PHOSPHORUS, REACTIVE, continued
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