Hanna-instruments HI 83208-2008 Uživatelský manuál stáhnout pdf (Strana 19)

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Iron LR

INTERFERENCES

Interference may be caused by:

Cadmium above 4.0 mg/L

Chromium

above 0.25 mg/L

Chromium

above 1.2 mg/L

Cobalt above 0.05 mg/L

Copper above 0.6 mg/L

Cyanide above 2.8 mg/L

Manganese above 50.0 mg/L

Mercury above 0.4 mg/L

Molybdenum above 4.0 mg/L

Nickel above 1.0 mg/L

Nitrite ion above 0.8 mg/L

Sample pH should be between 3 and 4 to avoid developed color to fade or turbidity formation.

Iron LR

• Press ZERO key. The display will show “-0.0-” when the meter is zeroed and ready for measurement.

• Remove the cuvette.

• Fill another graduated mixing cylinder up to the 25 mL mark

with the sample.

• Add the content of one packet of HI 93746-0 TPTZ reagent,

close the cylinder and shake

vigorously for 30 seconds. This is the

reacted sample.

• Fill a cuvette with 10 mL of the reacted sample up to the mark

and replace the cap.

• Insert the sample into the instrument.

• Press TIMER and the display will show the countdown

prior to the measurement or, alternatively, wait for 30

seconds and press READ. When the timer ends the

meter will perform the reading. The instrument displays

concentration in µg/L of iron.

25 ml

10 mL

30"

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Hanna-instruments HI 83208-2008 Uživatelský manuál Strana 19