Hanna-instruments HI 4013 Uživatelský manuál stáhnout pdf (Strana 5)

V. V.

Equipment required:Equipment required:

Equipment required:

• The HI 4013 requires the Hanna HI 5315 Double

junction reference electrode with HI 7078 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 Nitrate Measurements

0.1 M sodium nitrate standard, 500 mL HI 4013-01

100 ppm nitrate standard, 500 mL HI 4013-02

1000 ppm nitrate standard, 500 mL HI 4013-03

Ionic Strength Adjuster

ISA, 500 mL HI 4013-00

ISISA, 500 mL HI 4013-06

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 4013-00 should be added to 100

mL sample or standard.

HI 4013-06 ISISA is Interferent suppressent ISA. Prepare

by dissolving 17.32g Al

(S0

)

0, 3.43.g Ag

, 1.28g

, 2.52g H

NSO

H in approximately 800 mL deion-

ized water. Adjust pH to 3 with 0.1 N NaOH. Dilute to 1

liter. Store in a dark colored container.

For drinking water: 10 mL of ISISA should be added to each

50 mL sample or standard.

VIIVII

VII.

General GuidelinesGeneral Guidelines

General Guidelines

• Ensure the o-ring is installed on modules before screw-

ing into the sensor handle or inner stem.

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