ORBECO SP600, Instruction Manual, Page: 140 / 334

138 SP600 Spectrophotometer 01/2008
1.1 Methods
Hydrogen peroxide
with Tablet
0.03 – 1.5 mg/l H
2
O
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, empty the
vial leaving a few drops in
.
5. Add one HYDROGENPEROXIDE LR tablet straight
from the foil and crush the tablet using a clean stir-
ring rod.
6. Add water sample to the 10 ml mark.
7. Close the vial tightly with the cap and swirl 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.
Wait for a reaction period of 2 minutes .
After the reaction period is finished the measurement starts
automatically.
The result is shown in the display in mg/l Hydrogen
peroxide.
Countdown
2:00
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
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