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The instructions listed below should be carefully followed during testing to ensure best accuracy.
• Color or suspended matter in large amounts may cause
interference, therefore these should be removed by
treatment with active carbon and by prior filtration.
• For a correct filling of the cuvette: the liquid in the
cuvette forms a concavity on the top; the bottom of this
concavity must be at the same level of the 10 mL mark.
• Proper use of the powder reagent packet:
(a) use scissors to open the powder packet;
(b) push the edges of the packet to form a spout;
(c) pour out the content of the packet.
• In order to measure exactly 0.5 mL of reagent with the 1 mL syringe:
(a) push the plunger completely into the syringe and insert the tip into the solution.
(b) pull the plunger up until the lower edge of the seal is exactly on the 0.0 mL mark.
(c) take out the syringe and clean the outside of the syringe tip. Be sure that no drops are
hanging on the tip of the syringe, if so eliminate them. Then, keeping the syringe in
vertical position above the cuvette, push the plunger down into the syringe until the lower
edge of the seal is exactly on the 0.5 mL mark. Now the exact amount of 0.5 mL has
been added to the cuvette, even if the tip still contains some solution.
GENERAL TIPS FOR AN ACCURATE MEASUREMENT
Battery low:
The battery must be replaced soon.
Dead battery:
This indicates that the battery is dead and must
be replaced. Once this indication is displayed, the meter will
lock up. Change the battery and restart the meter.
