112
Phosphorus
PHOSPHORUS
SPECIFICATIONS
Range 0.0 to 15.0 mg/L
Resolution 0.1 mg/L
Accuracy ±0.3 mg/L ±4% of reading at 25 °C
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,
18
th
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 132.
MEASUREMENT PROCEDURE
• 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 93706A-0 Molybdate reagent.
10 mL
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