Mercury vapor Hg NO.40


Performance

Measuring Range

0.05 to 0.25 mg/m3

0.25 to 6.0 mg/m3

6.0 to 13.2 mg/m3

Number of Pump Strokes

5

1

1/2

Correction Factor

1/5

1

2.2

Sampling Time

1.5 minutes per pump stroke

Detecting Limit

0.01 mg/m3 (n=5)

Color Change

White Pale Orange

Reaction Principle

Mercury reacts with copper iodide to form Cu-Hg complex,
which is pale orange color.
Hg + Cu2I2 Cu2(HgI4) + 2Cu
Coefficient of Variation

10% (for 0.25 to 2 mg/m3), 5% (for 2 to 6 mg/m3)
Shelf Life 3 Years
Corrections for
temperature & humidity		 Unnecessary
Store the tubes at cool and dark place.


Possible coexisting substances and their interferences (NOTE)

Substance

Concentration

Interference

Change color by itself

Chlorine

 -

Plus error

Produces pale orange stain

Nitrogen dioxide

 -

Plus error

Produces pale orange stain

Hydrogen sulfide

 -

Plus error

Produces pale orange for whole layer of the reagent


Calibration gas generation Vaper pressure method


TLV-TWA TLV-STEL Explosive range
0.025mg/m3 - -


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