Hanna-instruments HI 4004 Manual do Utilizador descarregar pdf (Página 5)

V. V.

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.

Solutions RequiredSolutions 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

should be prepared daily.

Two mL of Hanna ISA HI 4004-00 should be added to

100 mL sample or standard.

VIIVII

VII.

General GuidelinesGeneral Guidelines

General Guidelines

• Ensure the o-ring is installed on modules before

screwing into the sensor handle or inner stem.

O-Ring

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Hanna-instruments HI 4004 Manual do Utilizador Página 5