Hanna-instruments HI 83214 Manual de usuario descargar pdf (Pagina 59)

PHOSPHORUS, REACTIVE HIGH RANGE

Phosphorus, Reactive HR

SPECIFICATIONS

Range 0.0 to 32.6 mg/L P

Resolution 0.1 mg/L

Accuracy ±0.5 mg/L or ±5 % of reading @ 25 °C, whichever is greater

Light Source Tungsten lamp with narrow band interference filter @ 420 nm

Method Adaptation of the

Standard Methods for the Examination of Water and Wastewater,

edition

, 4500-P C, vanadomolybdophosphoric acid method. The reaction between

orthophosphate and the reagents causes a yellow tint in the sample.

REQUIRED REAGENTS

Code Description Q.ty/test Q.ty/set

HI 93763A-0* Reagent Vial 1 vial 50 vials

DEIONIZED120 Deionized Water 5 mL 1 bottle

Reagent Vial identification

: P RHR, green label.

Note: Store the unused vials in their container in a cool and dark place.

REAGENT SET

HI 93763A-50 Reagents for up to 49 tests

For other accessories see page 68.

MEASUREMENT PROCEDURE

Reagent Blank Correction: This method requires a reagent blank correction. A single blank vial may be used

more than once; the blank vial is stable up to two weeks (room temperature). For most accurate measurement,

run a blank for each set of measurements and always use the same lot of reagents for blank and samples.

• Select the

Phosphorus, Reactive High Range

method following one of the procedures described in the

“Method Selection” section (see page 15).

• Remove the caps from two Reagent Vials.

• Add exactly 5.0 mL of sample to one vial (sample vial), and 5.0 mL of deionized water to the other

vial (blank vial), while keeping the vials at a 45-degree angle.

← green label →

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Hanna-instruments HI 83214 Manual de usuario Pagina 59