Thermo Scientific AQUAfast AQ3700, User Manual

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Thermo Scientific Orion AQUAfast AQ3700 Colorimeter User Guide
1.1 Methods
Hydrazine
with Liquid Reagent
0.01 – 0.6 mg/l N
2
H
4
/ 5 – 600 μg/l N
2
H
4
Use two clean vials (24 mm Ø) and mark one as blank for
zeroing.
1. Fill a clean vial with 10 ml deionized water (this is the
blank).
2. Add
1 ml Hydra 2 Rgt Solution
into the vial
(Note 3).
3. Close the vial tightly with the cap and swirl several times
to mix the contents.
4. Place the vial (the blank) in the sample chamber making
sure that the marks are aligned.
5. Press ZERO key.
6. Remove the vial from the sample chamber.
7. Fill the second clean vial with 10 ml of the water
sample (this is the sample).
8. Add
1 ml Hydra 2 Rgt Solution
into the vial.
9. Close the vial tightly with the cap and swirl several times
to mix the contents.
10. Place the vial (the blank) in the sample chamber making
sure that the marks are aligned.
11. Press TEST key.
Wait for a
reaction period of 12 minutes
.
After the reaction period is finished the measurement
starts automatically.
The result is shown in the display as Hydrazine.
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
Countdown
12:00
0 6 2