Hanna-instruments HI 83212 Manual de usuario descargar pdf (Pagina 21)

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Phosphorus

• Add the content of one packet of HI 93706B-0 Phosphorus

Reagent B (Amino Acid) to the cuvette. Replace the cap

and shake gently until completely dissolved.

• Reinsert the cuvette into the instrument.

• Press TIMER and the display will show the countdown

prior to the measurement or, alternatively, wait for 5

minutes and press READ. When the timer ends the

meter will perform the reading. The instrument displays

the results in mg/L of phosphorus (P).

• Press the s or t to access the second level of functions.

• Press the Chem Frm functional key to convert the result in mg/L of phosphate (PO

) and phosphorus

pentoxide (P

• Press the s or t to go back to the measurement screen.

INTERFERENCES

Interference may be caused by:

Sulfide

Chloride above 150000 mg/L

Calcium above 10000 mg/L as CaCO

Magnesium above 40000 mg/L as CaCO

Ferrous iron above 100 mg/L

Phosphorus

PHOSPHORUS

SPECIFICATIONS

Range 0.0 to 15.0 mg/L

Resolution 0.1 mg/L

Accuracy ±0.3 mg/L ±4% of reading

Typical EMC Dev. ±0.2 mg/L

Light Source Tungsten lamp with narrow band interference filter @ 525 nm

Method Adaptation of the

Standard Methods for the Examination of Water and Wastewater,

edition,

Amino Acid method. The reaction between phosphate and reagents

causes a blue tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93706A-0 Molybdate 10 drops

HI 93706B-0 Amino Acid Powder 1 packet

REAGENT SETS

HI 93706-01 Reagents for 100 tests

HI 93706-03 Reagents for 300 tests

For other accessories see page 50.

MEASUREMENT PROCEDURE

• Select the

Phosphorus

method using the procedure de-

scribed in the

Method Selection

section (see page 12).

• Fill the cuvette with 10 mL of unreacted sample (up to

the mark) and replace the cap.

• Place the cuvette into the holder and close the lid.

• Press ZERO key. The display will show “-0.0-” when the

meter is zeroed and ready for measurement.

• Remove the cuvette.

• Add 10 drops of HI 937O6A-0 Molybdate reagent. x 10

10 ml

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