Thermo Scientific AQUAfast AQ3700, User Manual

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Thermo Scientific Orion AQUAfast AQ3700 Colorimeter User Guide
1.1 Methods
Chlorine, free
with Liquid Reagent
0.02 – 4 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 and empty
the vial .
5. Fill the vial with drops of the same size by holding the
bottle vertically and squeeze slowly:
6 drops of DPD 1 buffer solution
2 drops of DPD 1 reagent solution
6. Add water sample to the 10 ml mark.
7. Close the vial tightly with the cap and swirl several times
to mix the contents.
8. Place the vial in the sample chamber making sure that
the marks are aligned.
9. Press TEST key.
The result is shown in the display in mg/l
free Chlorine.
Notes (free and total Chlorine):
1. After use replace the bottle caps securely noting the color coding.
2.
Store the reagent bottles in a cool, dry place ideally between 6°C and 10°C.
3. Also see page 37.
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
0
1
1