Hanna-instruments HI 83200-01 Manual do Utilizador descarregar pdf (Página 12)

22 23

• Add the content of one packet of HI 93712C-0 Bleaching

powder to one of the two cuvettes. Replace the cap and

shake vigorously until completely dissolved. This is the blank.

• Place the blank into the holder and close the lid.

• Press TIMER and the display will show the countdown prior to

zeroing the blank. Alternatively wait for 15 minutes and then press

ZERO. The display will show "-0.0-" when the meter is zeroed and

ready for measurement.

• Remove the blank and insert the other cuvette into the instrument.

• Press the READ key and the meter will perform the reading. The

instrument displays the results in mg/L of aluminum.

• Press the  or  to access the second level of functions.

• Press the Chem Frm functional key to convert the result in mg/L of Al

• Press the  or  to go back to the measurement screen.

INTERFERENCES

Interference may be caused by:

Iron above 20 mg/L Alkalinity above 1000 mg/L

Phosphate above 50 mg/L Fluoride must be absent

Aluminum

SPECIFICATIONS

Range 0 to 500 mg/L (as CaCO

)

Resolution 5 mg/L

Precision ±10 @ 100 mg/L

Typical EMC ±5 mg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 575 nm

Method

Colorimetric Method. At different alkalinity levels a distinctive range of colors from yellow

to green and greenish blue will develop.

REQUIRED REAGENTS

Code Description Quantity/test

HI 93755-0 Alkalinity Indicator Reagent 1 packet

REAGENT SETS

HI 93755-01 Reagents for 100 tests

HI 93755-03 Reagents for 300 tests

For other accessories see page 128.

MEASUREMENT PROCEDURE

• Select the

Alkalinity

method using the procedure described in the

Method Selection

section (see page 12).

• Fill the cuvette with 10 mL of unreacted sample, up to the

mark, and replace the cap.

• Place the cuvette into the holder and close the lid

• Press ZERO key. The display will show “-0.0-” when the meter is

zeroed and ready for measurement.

ALKALINITY

10 mL

Alkalinity

# 1

# 2

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 66 67

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