Hanna Instruments HI 83214 User Manual

Page 49

SPECIFICATIONS

Range

0.00 to 1.60 mg/L P

Resolution

0.01 mg/L

Accuracy

±0.05 mg/L or ±5 % of reading @ 25 °C, whichever is greater

Light Source

Tungsten lamp with narrow band interference filter @ 610 nm

Method

Adaptation of the EPA method 365.2 and

Standard Methods for the Examination of

Water and Wastewater, 20

edition, 4500-P E, ascorbic acid method. The reaction

between orthophosphate and the reagent causes a blue tint in the sample.

REQUIRED REAGENTS

Code

Description

Q.ty/test

Q.ty/set

HI 93758A-0*

Reagent Vial

1 vial

50 vials

HI 93758-0

Phosphorus Reagent

1 packet

50 packets

Reagent Vial identification: P R, red label.

REAGENT SET

HI 93758A-50

Reagents for 50 tests

For other accessories see page 68.

MEASUREMENT PROCEDURE

• Select the

Phosphorus, Reactive method following one of the procedures described in the “Method

Selection” section (see page 15).

• Remove the cap from a Reagent Vial.
• Add exactly 5.0 mL of sample to the vial, while keeping the

vial at a 45-degree angle.

• Replace the cap and mix by inverting the vial a couple of

times. This is the blank.

• Place the vial into the holder and push it completely down.
• Press the Zero key. The instrument will perform a zero sequence

and after a few seconds the display will show “

-0.0-”. Now the

meter is zeroed and ready for measurement.

• Remove the vial.

PHOSPHORUS, REACTIVE

Phosphorus, Reactive