Hanna Instruments HI 4004 - Manual (Page 5)

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V. V. V. V. V. Equipment required: Equipment required: Equipment required: Equipment required: Equipment required:
• The HI 4004 requires the Hanna HI 5315 Double
junction reference electrode with HI 7082 as external
electrolyte.
• 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
magnetic stirring bars (Note: Isolate beakers from stir-
rer 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
Standards for Calcium Measurements
0.1 M calcium standard,500 mL
HI 4004-01
Ionic Strength Adjuster
ISA, 500 mL
HI 4004-00
Conditioning and Storage Solution
Calcium storage solution, 500 mL
HI 4004-45
Using volumetric pipettes and glassware make dilutions to
bracket the concentration of the samples. Store samples in
plastic bottles. Standards with concentrations < 10
-3 M
should be prepared daily.
Two mL of Hanna ISA HI 4004-00 should be added to
100 mL sample or standard.
VII VII VII VII VII. General Guidelines General Guidelines General Guidelines General Guidelines General Guidelines
• Ensure the o-ring is installed on modules before
screwing into the sensor handle or inner stem.
O-Ring