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Ammonia  (NH3)
Item Item Details
(Price is for domestic US market only)
Ammonia  (NH3)
Item Name:
Ammonia (NH3)
Item #:
GAS-3H

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Ammonia NH3 NO.3H


Performance

Measuring Range

0.2 to 1%

1 to 16%

16 to 32%

Number of Pump Strokes

5 - 2

1

1/2

Correction Factor

1/5 to 1/2

1

2

Sampling Time

1 minute per pump stroke

Detecting Limit

0.05% (n=5)

Color Change

Purple Yellow

Reaction Principle

Ammonia neutralizes acids to discolor the indicator to yellow.

Coefficient of Variation 10% (for 1 to 4 %), 5% (for 6 to 16 %)
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

Hydrazine

-

Plus error

Discolor to yellow stain

Carbon dioxide

1% or higher

Minus error

No discoloration

Amines other than aromatic amines

-

Plus error

Discolor to yellow stain


Other substance measurable with this detector tube

Substance

Correction Factor

Pump Strokes

Measuring Range

Dimethylamine

1.2

1

1.2 to 19.2%


Calibration gas generation High pressure gas cylinder method

TLV-TWA TLV-STEL Explosive range
25ppm 35ppm 15 to 28%


Range 0.2-32%


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