Thermo Scientific AQUAfast AQ3700, User Manual

Page: 73 / 264

7
Thermo Scientific Orion AQUAfast AQ3700 Colorimeter User Guide
1.1 Methods
Copper, differentiated determination
with Tablet
0.05 – 5 mg/l Cu
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
one COPPER No. 1 tablet
straight from the foil
to the water sample and crush the tablet using a clean
stirring rod.
6. Close the vial tightly with the cap and swirl several times
until the tablet is dissolved.
7. Place the vial in the sample chamber making sure that
the marks are aligned.
8. Press TEST key.
9. Remove the vial from the sample chamber.
10. Add one COPPER No. 2 tablet straight from the foil
to the same water sample and crush the tablet using a
clean stirring rod.
11. Close the vial tightly with the cap and swirl several times
until the tablet is dissolved.
12. Place the vial 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 free Copper
mg/l combined Copper
mg/l total Copper
*,** mg/l free Cu
*,** mg/l comb Cu
*,** mg/l total Cu
Zero accepted
prepare T1
press TEST
prepare Zero
press ZERO
T1 accepted
prepare T2
press TEST
5
0
1