Isopentyl alcohol (CH3)2CHCH2CH2OH
(i-C5H11OH)		 NO.117


Performance

Measuring Range

5 to 300 ppm

Number of Pump Strokes

2

Correction Factor

1

Sampling Time

3 minutes per pump stroke

Detecting Limit

1 ppm (n=2)

Color Change

Yellow Pale blue

Reaction Principle

Isoamyl alcohol reduces potassium dichromate to
form chromicsulfate, which is blue in color
(CH3 )2CHCH2CH2 OH + Cr6+ + H3PO4   Cr3+
Coefficient of Variation

15% (for 5 to 30 ppm), 10% (for 30 to 300 ppm)
Shelf Life 3 Years
Corrections for
temperature & humidity		 Temperature correction is necessary
Store the tubes at cool and dark place.


Possible coexisting substances and their interferences (NOTE)

Substance

Concentration

Interference

Change color by itself

Alcohols

 -

Plus error

Produce similar stain by themselves.


Calibration gas generation Diffusion tube method


TLV-TWA TLV-STEL Explosive range
100ppm 125ppm 1.2 to 9%


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