Hanna-instruments HI 83200 Manual de usuario descargar pdf (Pagina 59)

116 117

SPECIFICATIONS

Range 0 to 100 mg/L

Resolution 5 mg/L

Accuracy ±5 mg/L ±3% of reading at 25 °C

Light Source Tungsten lamp with narrow band interference filter @ 466 nm

Method Sulfate is precipitated with barium chloride crystals. Light absorbance of the suspension

is measured.

REQUIRED REAGENTS

Code Description Quantity

HI 93751-0 Indicator reagent 1 packet

REAGENT SETS

HI 93751-01 Reagents for 100 tests

HI 93751-03 Reagents for 300 tests

For other accessories see page 124.

MEASUREMENT PROCEDURE

Note: for sample preparation follow the COLORED OR TURBID SAMPLES procedure on page 17.

• Select the

Sulfate

method using the procedure described

in the

Method Selection

section (see page 12).

• Fill a cuvette with 10 mL of unreacted sample (up to

the mark) and replace the cap.

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

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

measurement.

• Remove the cuvette.

Sulfate

SULFATE

Silver

• Press the 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.

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

replace the cap and invert gently to mix for about

10 seconds.

• Insert the second cuvette into the instrument.

• Press Read to start the reading. The instrument displays the results in mg/L of silver.

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

Cl¯ 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

F¯ above 20 mg/L Zn

above 30 mg/L

10 mL

# 2

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 65

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