Hanna-instruments HI 4011 Instrukcja Użytkownika Pobierz pdf (Strona 5)

V. V.

Equipment required:Equipment required:

Equipment required:

• Hanna HI 5315 Double Junction Reference Electrode

with HI 7072 Fill Solution for HI 4011.

• Hanna HI 4222 pH/ISE/mV meter or other suitable

ion or pH/mV meter. (Note: log/linear graph paper is

useful if an ISE (ion) meter is not available).

• Hanna HI 180 Magnetic Stirrer or equivalent with TFE

coated stirring bars (HI 731320). Note: isolate bea-

kers from stirrer motor heat by placing insulating

material such as foam or cork between them.

• Hanna HI 76404 Electrode Holder or equivalent.

• Plastic beakers (HI 740036P) or other suitable mea-

surement vessel.

VI. VI.

VI.

Solutions RequiredSolutions Required

Solutions Required

for Iodide Measurementsfor Iodide Measurements

for Iodide Measurements

0.1 M Iodide Standard, 500 mL HI 4011-01

ISA, 500 mL HI 4000-00

For Molar solutions:

Using volumetric pipettes and glassware make serial dilu-

tions to approximately bracket the concentration of the

samples. Standards with concentrations < 10

-3

M should

be prepared daily.

Two mL of Hanna ISA for Halide electrodes (HI 4000-00)

should be added to 100 mL of sample or standard.

For ppm solutions:

Prepare 1269 ppm iodide standard by diluting HI 4011-

01: Pipette 100 mL standard to a 1 liter volumetric flask.

Add deionized water to volume. Using additional volumet-

ric pipettes and glassware make serial dilutions of this

1269 ppm standard to approximately bracket the concen-

tration of the samples. Standards with concentrations

< 127 ppm should be prepared daily.

Two mL of Hanna ISA for Halide electrodes (HI 4000-00)

should be added to 100 mL of sample or standard.

1 2 3 4 5 6 7 8 9 10 ... 15 16

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Hanna-instruments HI 4011 Instrukcja Użytkownika Strona 5