153
8.48. OXYGEN SCAVENGERS (ISO-ASCORBIC ACID)
SPECIFICATIONS
Range
0.00 to 4.50 mg/L (as Iso‑ascorbic acid)
Resolution
0.01 mg/L
Accuracy
±0.03 mg/L ±3 % of reading at 25 °C
Light Source
LED with narrow band interference filter @ 575 nm
Method
Adaptation of the iron reduction method
REQUIRED REAGENTS
Code
Description Quantity
HI96773A‑0
Oxygen Scavengers Reagent A
2 packets
HI96773B‑0
Oxygen Scavengers Reagent B
1 mL
REAGENT SET
HI96773‑01
Reagents for 50 tests
HI96773‑03
Reagents for 150 tests
For other accessories see page 200.
MEASUREMENT PROCEDURE
• Select the
Oxy. Scavengers (ISA)
method using the procedure
described in the Method Selection section (see page 18).
• Fill first cuvette (#1) with 10 mL of deionized water (up to the mark).
• Fill second cuvette (#2) with 10 mL of sample (up to the mark).
• Add one packet of
HI96773A‑0
Oxygen Scavengers Reagent A
to (#1) cuvette. Replace the cap and invert for 30 seconds.
10 mL
10 mL
#1
#2
#1
OXYGEN SCA
VENGERS (ISO
-ASCORBIC ACID)