Hanna-instruments HI 98703 Manuale Utente Scaricare il pdf (Pagina 12)

GENERAL TIPS FOR AN ACCURATE MEASUREMENT

CUVETTE

The cuvette is part of the optical system in all measurements. The light reaches the sample by

passing through the cuvette glass. As a result, the measurement can be affected by the glass

imperfections, dirt, dust, scratches, or fingerprints present on the cuvette surface.

CUVETTE HANDLING

The cuvettes should be free of scratches or cracks. Any cuvette with visible scratches will be

discarded. The cuvettes should be periodically washed with acid. After washing, the cuvettes

should be well rinsed many times with distilled or deionized water. Allow cuvettes to air-dry and

store them for long periods of time with caps, to avoid dirt entering inside. Always handle the

cuvette by touching only the cap or its top side (over the horizontal line).

Always store the cuvettes in separate boxes or with separators between them to avoid scratches

on the surface.

CUVETTE PREPARATION

Whenever a cuvette is used, it must be clean inside and outside. When it is placed into the

instrument, it must be dry outside, completely free of fingerprints or dirt.

If the cuvette is not indexed, put the cuvette with the factory mark aligned with the sign on the

instrument top.

HI 98703 is a highly accurate turbidimeter. To meet the instrument performance and fully

benefit of its properties it is very important that the analyst perform accurate, precise and

repeatable readings using proper measurement techniques. Special care must be taken during

sample preparation and handling.

The instructions listed below should be carefully followed during measurement and calibration to

ensure best accuracy.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 39 40

Nessun commento

Hanna-instruments HI 98703 Manuale Utente Pagina 12