Aromatic hydrocarbons

NO.120

　

Performance

Measuring Range

0.4 to 2 ppm

2 to 100 ppm

100 to 200 ppm

Number of Pump Strokes

2 to 5

1

1/2

Correction Factor

1/2 to 1.5

1

2

Sampling Time

1.5 minutes per pump stroke

Detecting Limit

0.2 ppm (n=5)

Colour Change

White → Brown

Reaction Principle

Aromatic Hydrocarbons + I2O5 + H2SO4 → I2

Coefficient of Variation

10% (for 2 to 20 ppm), 5% (for 20 to 100 ppm)

Shelf Life

3 Years

Corrections for temperature & humidity

Unnecessary

　

Calibration gas generation

Diffusion tube method

TLV-TWA	TLV-STEL	Explosive range
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