Hanna-instruments HI 83212 Manual de usuario descargar pdf (Pagina 24)

46 47

Silver

• Press ZERO key. The display will show “-0.0-” when the meter is zeroed and ready for measurement.

• Fill a second cuvette up to the mark with 10 mL of the reacted sample.

• Insert the second cuvette into the instrument.

• Press READ to start the reading. The instrument displays

the results in mg/L of silver.

Note: a temperature above 30°C may cause turbidity. In this case, before zeroing and taking readings,

add 2-3 drops of Dispersing agent (HI 93703-51) to each cuvette and swirl until turbidity is completely

dissolved.

INTERFERENCES

Interference may be caused by:

above 30 mg/L Fe

above 1.5 mg/L

above 1000 mg/L as CaCO

above 10 mg/L

above 20 mg/L K

above 500 mg/L

above 8000 mg/L Mn

above 25 mg/L

above 1.5 mg/L Mg

above 1000 mg/L as CaCO

above 20 mg/L Na

above 5000 mg/L

above 40 mg/L Ni

above 1.5 mg/L

above 15 mg/L Pb

above 20 mg/L

above 20 mg/L Zn

above 30 mg/L

10 mL

# 2

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.

• Then press TIMER or, alternatively, wait for 2 minutes to allow reaction to complete.

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

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

# 2

# 1

# 2

10 mL

# 1

10 mL

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Hanna-instruments HI 83212 Manual de usuario Pagina 24

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