Hanna-instruments HI 83205-2008 Bedienungsanleitung PDF herunterladen (Seite 35)

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Zinc

ZINC

SPECIFICATIONS

Range 0.00 to 3.00 mg/L

Resolution 0.01 mg/L

Accuracy ±0.03 mg/L ±3% of reading

Typical EMC ±0.01 mg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 575 nm

Method Adaptation of the

Standard Methods for the Examination of Water and Wastewater,

edition,

Zincon method. The reaction between zinc and the reagents causes an

orange to a dark violet tint in the sample.

REQUIRED REAGENT

Code Description Quantity

HI 93731A-0 Zinc Reagent 1 packet

HI 93731B-0 Cyclohexanone 0.5 mL

REAGENT SETS

HI 93731-01 Reagents for 100 tests

HI 93731-03 Reagents for 300 tests

For other accessories see page 73.

MEASUREMENT PROCEDURE

• Select the

Zinc

method using the procedure described in the

Method Selection

section (see page 12).

• Fill one graduated mixing cylinder up to the 20 mL mark with

the sample.

• Add the content of one packet of HI 93731A-0 zinc reagent,

close the cylinder and invert several times to mix until completely

dissolved.

• Fill one cuvette with 10 mL of the reacted sample up to the

mark.

20 mL

10 mL

INTERFERENCES

Interference may be caused by:

Phosphate above 60 mg/L

Phosphate above 75 mg/L

Sulfide and high concentration of iron

Eliminate color and turbidity interferences by zeroing the meter with the original water sample.

Silica

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