Hanna-instruments HI 83225 Bedienungsanleitung PDF herunterladen (Seite 38)

PHOSPHORUS MEDIUM RANGE

SPECIFICATIONS

Range 0.0 to 50.0 mg/L

Resolution 0.5 mg/L

Accuracy ±2.5 mg/L ±4% of reading at 25 °C

Typical EMC Dev. ±0.5 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 57.

MEASUREMENT PROCEDURE

Note: for sample preparation follow the NUTRIENTS SOLUTION (MR) procedure at page 21.

• Select the

Phosphorus

method using the procedure described

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 the 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.

Phosphorus MR

10 mL

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Hanna-instruments HI 83225 Bedienungsanleitung Seite 38