NH3

Performance

Measuring Range

0.5 to1 ppm

1 to 30 ppm

30 to 78 ppm

Number of PumpStrokes

1/2

Correction Factor

1/2

2.6

Sampling Time

1 seconds perpump stroke

Detecting Limit

0.2 ppm (n=2)

Color Change

Pink → Yellow

Reaction Principle

2NH3 + H2SO4 → (NH4)2SO4

Coefficient ofVariation10% (for5 to 20 ppm)， 5% (for 20 to 100 ppm)ShelfLife3YearsCorrectionsfor
temperature & humidityTemperature correction is necessaryStore the tubes at cool and darkplace.
Possible coexisting substances and theirinterferences(NOTE)

Substance

Concentration

Interference

Change color by itself

Carbondioxide

Hydrazine

Yellow

Amines

1/15

Yellow ( 5ppm)

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