Carbon monoxide CO NO.1LM
1LM


Performance

Measuring Range

25 to 50 ppm

50 to 1000 ppm

1000 to 2000 ppm

Number of Pump Strokes

2

1

1/2

Correction Factor

1/2

1

2

Sampling Time

3 minutes per pump stroke

Detecting Limit

5 ppm (n=2)

Color Change

White Pale brown

Reaction Principle

Carbon monoxide reduces iodine pentoxide to
librate iodine to produce pale brown stain.
Coefficient of Variation

10% (for 50 to 200 ppm), 5% (for 200 to 1000 ppm)
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

Acetylene,Olephines,
Propane, Hexane

 -

Plus error

Produce similar stain by themselves.
Butane - Plus error Pale Brown
Hydrogen - No No


Calibration gas generation High pressure gas cylinder method


TLV-TWA TLV-STEL Explosive range
25ppm - 12.5 to 74%

Copyright(c) 2001 GASTEC CORPORATION. All rights reserved.