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

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Ammonia NH3 NO.3LA


Performance

Measuring Range

2.5 to 5ppm

5 to 100 ppm

100 to 200ppm

Number of Pump Strokes

2

1

1/2

Correction Factor

1/2

1

2

Sampling Time

30 seconds per pump stroke

Detecting Limit

0.5ppm (n=2)

Color Change

Purple Yellow

Reaction Principle

Ammonia react with phosphoric acid to change
the color of pH indicator to yellow.

Coefficient of Variation 10% (for 5 to 20 ppm), 5% (for 20 to 100 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

Carbon dioxide

1%

Minus error(20%)

-

Hydrazine

-

Plus error

Produce yellow discoloration

Amines

1/15

Plus error

Discolors at 5 ppm(Yellow)


Calibration gas generation Permeation tube method


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

Range 2.5-200


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