DR/2400
Oxygen, Dissolved
OxygenDis_AccuVac_UHigh_UHR_Eng_Ody.fm Page 1 of 4
• Analyze samples on-site. Do not store for later analysis.
Oxygen, Dissolved
Method 8333
Ultra High Range Method
AccuVac
®
Ampul
UHR (1.0 to 40.0 mg/L O
2
)
Scope and Application: For aquaculture
1. Touch
Hach Programs.
Select program
448 Oxygen Di. UHR AV.
Touch
Start.
2. Fill a round sample
cell with at least 10 mL
of sample (the blank).
3. Fill a blue ampule cap
with sample.
4. Fill a High Range
Dissolved Oxygen
AccuVac Ampul with
sample. Keep the tip
immersed while the
ampule fills completely.
5. Hold the ampule with
the tip pointing down
and immediately place
the ampule into the
ampule cap.
The cap prevents
contamination from
atmospheric oxygen.
6. Shake the ampule for
30 seconds.
A small amount of
undissolved reagent will
not affect results.
7. Touch the timer icon.
Touch
OK.
A two-minute reaction
period will begin. This
enables the oxygen that
was degassed during
aspiration to redissolve
and react.
8. When the timer
beeps, shake the ampule
for 30 seconds.
Note: Allow any bubbles to
dissipate before proceeding.
Tips and Techniques
AccuVac Ampul Method 8333
Hach Programs
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