Thermo Scientific AQUAfast AQ3700, User Manual

Page: 37 / 264

3
Thermo Scientific Orion AQUAfast AQ3700 Colorimeter User Guide
1.1 Methods
Chloramine (Mono)
with Powder Pack
0.04 – 4.50 mg/l Cl
2
1. Fill a clean vial (24 mm Ø) with 10 ml of the water
sample , close tightly with the cap.
2. Place the vial in the sample chamber making sure that
the marks are aligned.
3. Press ZERO key.
4. Remove the vial from the sample chamber.
5. Add the contents of one Monochlor FRGT
Powder Pack straight from the foil into the
water sample.
6. Close the vial tightly with the cap and swirl several times
to mix the contents (approx. 20 seconds).
7. Place the vial in the sample chamber making sure that
the marks are aligned.
8. Press TEST key.
Wait for a reaction period of 5 minutes .
After the reaction period is finished the measurement
starts automatically.
The result is shown in the display in mg/l
Monochloramine.
mg/l Cl
2
mg/l NH
2
Cl
mg/l N
Notes:
See previous page.
6
3
1 2
3 4
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
Countdown
5:00