Methyl isobutyl ketone (CH3)2CHCH2COCH3 NO.153
153


Performance

Measuring Range

0.05 to 0.6%

Number of Pump Strokes

2

Correction Factor

1

Sampling Time

1.5 minutes per pump stroke

Detecting Limit

0.001% (n=2)

Color Change

Orange Greenish Brown

Reaction Principle

(CH3)2CHCH2COCH3+ Cr6+ + H2SO4 Cr3+
Coefficient of Variation

10% (for 0.05 to 0.2 %), 5% (for 0.2 to 0.6 %)
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

Sulfur dioxide

500 ppm

Plus error

Discolors green
(5000 ppm)

Hydrogen sulfide

500 ppm

Plus error

Discolors dark geen
(5000 ppm)

Alcohols, Esters,Ketones

 -

Plus error

Discolors greenish brown

Propane

0.2%

Cannot measure

Produce dark green for whole layer
(2000 ppm)

Aromatic HCs

500 ppm

Plus error

Discolors Greenish brown
(5000 ppm)



Other substance measurable with this detector tube

Substance

Correction Factor

Pump Stroke

Measuring Range

Styrene

1.5

1

0.075 to 0.9%


Calibration gas generation Static gas dilution method


TLV-TWA TLV-STEL Explosive range
50ppm 75ppm 1.2 to 8%


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