Hanna-instruments HI 83099 Manual de usuario descargar pdf (Pagina 62)

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Silver

• Add exactly 1.0 mL of HI 93737B-0 Buffer reagent to the second

beaker (the sample) and swirl gently to mix. Press Timer and the

display will show the countdown prior to adding reagent C or,

alternatively, wait for 2 minutes.

• Then add exactly 1.0 mL of HI 93737C-0 Indicator reagent to

each beaker and swirl. Press Timer or, alternatively, wait for

2 minutes.

• Then, in both cases, add 1.0 mL of HI 93737D-0 Fixing reagent

to each beaker and swirl. Press Timer or, alternatively, wait for

2 minutes.

• Fill one cuvette up to the mark with 10 mL of the blank.

• Add 3 drops of Dispersing Agent (HI 93703-51), replace

the cap and invert gently to mix for about 10 seconds.

• Place the cuvette into the holder and close the lid.

# 2

# 1

# 2# 1

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10 mL

Silver

SILVER

SPECIFICATIONS

Range 0.000 to 1.000 mg/L

Resolution 0.005 mg/L

Accuracy ±0.020 mg/L ±5% of reading at 25 °C

Typical EMC ± 0.001 mg/L

Deviation

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

Method Adaptation of the PAN method. The reaction between silver and reagents causes an

orange tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93737A-0 Buffer Reagent A 1 mL

HI 93737B-0 Buffer Reagent B 1 mL

HI 93737C-0 Indicator Reagent C 2 mL

HI 93737D-0 Fixing Reagent D 2 mL

HI 93703-51 Dispersing Agent 4-6 drops

REAGENT SETS

HI 93737-01 Reagents for 50 tests

HI 93737-03 Reagents for 150 tests

For other accessories see page 132.

MEASUREMENT PROCEDURE

• Select the

Silver

method using the procedure described in the

Method Selection

section (see page 12).

Note: for best results perform your tests between 20-24°C.

• Fill two graduated beakers with 25 mL of sample.

• Add 1.0 mL of HI 93737A-0 Buffer reagent to one beaker

(the blank) and swirl gently to mix.

# 1

# 2

# 1

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