Lovibond PoolDirect, Instruction And Operation Manual, Page: 29 / 78

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PoolDirect 9in1_4i 11/2015
1.1 Methods
Total Copper
0.05 – 5 mg/l Cu
1. Select the method required on keypad
2. Fill a clean vial (24 mm Ø) with
10 ml of the water
sample
, close tightly with the cap.
3. Place the vial in the sample chamber making sure that
the marks are aligned.
4. Press
ZERO
key.
5. Remove the vial from the sample chamber.
6. Add
one COPPER No. 1 tablet
and
one COPPER
No. 2 tablet
straight from the foil to the water sample
and crush the tablets using a clean stirring rod.
7. Close the vial tightly with the cap and swirl gently several
times until the tablet is dissolved.
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 as Total Copper in
mg/l.
Precision
An educated operator obtained under laboratory conditions exemplary for 2 different
(one) standard solutions the following standard deviations using different lots of reagent:
0.30 ± 0.03 mg/l; 3.50 ± 0.07 mg/l
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST