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Lovibond CHECKIT Comparator Manuel D'instructions page 4

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Note:
Read the safety data sheets for the chemicals used. Use
the recommended personal protective equipment and
follow the disposal instructions.
Place the CHECKIT
with numeric values facing the operator.
D55 Chlordioxid
1. Rinse the cuvettes with the water sample. Then fill both
cuvettes with the water sample up to the 10 mL mark.
Place a cuvette (without lid) in the left chamber of the
CHECKIT
Comparator D55 as a blank sample. The dot
®
on the cuvette must point to the viewer.
2. Add one DPD No. 1 tablet to the other cuvette. Do not
touch the tablet with your fingers.
3. Crush the tablet with a gentle twisting motion. Close
the cuvette with the lid and swirl slightly to dissolve the
tablet faster.
4. Place the cuvette in the right chamber of the CHECKIT
Comparator (without lid). The dot on the cuvette must
point to the viewer.
5. Hold the CHECKIT
Match the colour of the water sample with the CHECKIT
DISC. The color that matches the water sample indicates
the Chlorine Dioxide content in mg/L.
Disc in the comparator
®
Comparator D55 slightly angled.
®
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