Hanna-instruments HI 4003 Manual de usuario descargar pdf (Pagina 5)

V. V.

Equipment required:Equipment required:

Equipment required:

• Hanna HI 5315 Double Junction Reference Electrode

with HI 7072 Fill Solution for use with HI 4003 half-

cell.

• 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 Cadmium Measurements

0.1 M cadmium standard, (500 mL) HI 4003-01

ISA, (500 mL) HI 4000-00

For direct cadmium measurements- Using volumetric pi-

pettes and glassware, make dilutions of HI 4003-01 to

bracket the concentration of the samples. Note: 0.1M cad-

mium standard is equivalent to 11,200 ppm. Standards

with concentrations < 10

-3

M (112 ppm) should be pre-

pared daily. Store in tightly closed plastic bottle. To 100

parts standard or sample add 2 parts of ISA.

Please note: cadmium compounds are toxic by ingestion or

skin contact. Take appropriate precautions.

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Hanna-instruments HI 4003 Manual de usuario Pagina 5