Hanna-instruments HI 95747C Manual de usuario descargar pdf (Pagina 11)

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 cuvet: the liquid in

the cuvet forms a convexity on the top; the

bottom of this convexity 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;

Under range. A blinking "0.000" indicates that the sample

absorbs less light than the zero reference. Check the procedure

and make sure you use the same cuvet for reference (zero) and

measurement.

A flashing value of the maximum concentration indicates an

over range condition. The concentration of the sample is beyond

the programmed range: dilute the sample and re-run the test.

A flashing value lower than the maximum concentration indicates

a low signal-to-noise ratio condition. In this case accuracy of the

result is not guaranteed. Repeat the measurement procedure.

GENERAL TIPS FOR AN ACCURATE MEASUREMENT

(a) (b) (c)

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Hanna-instruments HI 95747C Manual de usuario Pagina 11