Hanna Instruments HI 4011 - Manual (Page 5)

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V. V. V. V. V. Equipment required: Equipment required: 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. VI. VI. Solutions Required Solutions Required Solutions Required Solutions Required Solutions Required for Iodide Measurements for Iodide Measurements for Iodide Measurements for 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.