Thermo Scientific AQUAfast AQ3700, User Manual

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2 Thermo Scientific Orion AQUAfast AQ3700 Colorimeter User Guide
1.1 Methods
Ammonia
with Powder Pack
0.01 – 0.8 mg/l N
Use two clean vials (24 mm Ø) and mark one as blank for
zeroing.
1. Fill a clean vial (24 mm Ø) with 10 ml of deionized
water (this is the blank).
2. Fill the other clean vial (24 mm Ø) with 10 ml of the
water sample (this is the sample).
3. Add the contents of one Ammonia Salicylate F10
Powder Pack straight from the foil to each vial.
4. Close the vials with the caps and shake to mix the
contents.
5. Press [ ] key.
Wait for a reaction period of 3 minutes .
After the reaction period is finished proceed as follows:
6. Add the contents of
one Ammonia Cyanurate F10
Powder Pack
straight from the foil to each sample.
7. Close the vials tightly with the caps and shake to mix
the contents.
8. Press
[ ]
key.
Wait for a reaction period of 15 minutes .
After the reaction period is finished proceed as follows:
9. Place the vial (the blank) in the sample chamber making
sure that the marks are aligned.
10. Press ZERO key.
11. Remove the vial from the sample chamber.
12. Place the vial (the sample) in the sample chamber
making sure that the marks are aligned.
13. Press
TEST
key.
The result is shown in the display in mg/l Ammonia as N.
1 2
3 4
Countdown 1
3:00
start:
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
Countdown 2
15:00
start:
6 2