Hanna-instruments HI 84500 Bedienungsanleitung PDF herunterladen (Seite 21)

FREE SO

MEASUREMENT PROCEDURE

• Refer to “Setup Menu” (see page 10) to set up the instrument for your measurement.

• For best accuracy, before taking any measurement, ensure that the pump is calibrated on the

selected range following the “Pump Calibration Procedure” (see page 19).

• Select the corresponding range according to the table below:

• Ensure the pump is primed with the correct titrant for the selected range (HI 84500-50 Low

Range Titrant or HI 84500-51 High Range Titrant).

Sample preparation: Use a clean pipette to precisely add the appropriate amount of wine

sample to a clean 100 mL beaker as indicated below:

egnaRwoL

)elpmasLm05(

egnaRhgiH

)elpmasLm05(

mpp0.04ot0.1 mpp004ot03

Low Range (Free & Total SO

) - 50 mL

High Range (Free & Total SO

) - 50 mL

Note: •The volume of wine added is critical to the measurement

accuracy. Pipettes are recommended.

•Failure to use a clean pipette will result in erroneous

readings.

• Fill the 20 mL beaker up to the 5 mL mark with the HI 84500-60

Acid Reagent and add the contents to the 100 mL beaker.

• Add the contents of one packet of HI 84500-62 Stabilizer

Packet to the 100 mL beaker.

• Press Titrator.

• This screen appears when the stirrer is not

working properly. Check the stir bar and beaker

content. Press Restart to try again.

• This error message appears when the pump is

not working properly. Check the tubing, valve

and syringe. Press Restart to try again.

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Hanna-instruments HI 84500 Bedienungsanleitung Seite 21