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Methyl bromide (CH3Br)
Item Item Details
(Price is for domestic US market only)
Methyl bromide (CH3Br)
Item Name:
Methyl bromide (CH3Br)
Item #:
GAS-136L

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Methyl bromide CH3Br NO.136L


Performance

Measuring Range

2.5 to 10 ppm

10 to 100 ppm

100 to 200 ppm

Number of Pump Strokes

4

1

1/2

Correction Factor

1/4

1

2

Sampling Time

3 minutes per pump stroke

Detecting Limit

0.5 ppm (n=4)

Color Change

White Yellow

Reaction Principle

Methyl bromide produce intermediate product by oxidizing agent
and produce yellow stain by reaction with detecting agent.

Coefficient of Variation 10% (for 10 to 20 ppm), 5% (for 20 to 100 ppm)
Shelf Life 2 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, Bromine, NOx

-

Plus error

Produce yellow stain

Saturated halogenated hydrocarbons

-

Plus error

Produce yellow stain


Other substance measurable with this detector tube

Substance

Correction Factor

Pump Strokes

Measuring Range

Chlorobromomethane

0.9

1

9 to 90 ppm

1,1-Dibromoethane

0.7

1

7 to 70 ppm

1,2-Dibromoethane

0.8

1

8 to 80 ppm

Dibromomethane

0.5

1

5 to 50 ppm

Ethyl Bromide

1.0

1/2, 1, 4

2.5 to 200 ppm

n-Butyl Bromide

1.0

1

1 to 100 ppm

Benzyl bromide

Tube 136L Reading (n=1)

10

20

40

60

80

100

Benzyl Bromide Conc. (ppm)

25

75

180

350

580

850


Bromform

Tube 136L Reading (n=1)

10

20

40

60

80

100

Bromform Conc. (ppm)

1

4

12

24

37

50


 
Range 2.5-200


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