GAS3D Ammonia Passive Dosi-Tube 2.5 - 1000ppm

SKU: GAS3D

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GAS3D Ammonia


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Excl. VAT: £35.00 Incl. VAT: £42.00
Excl. VAT: £35.00 Incl. VAT: £42.00

Product Description

Details

GAS3D Ammonia (NH3) Gastec Passive Sampling Dosi Tubes (Time Weighted Average Detector Tubes)

The Dosi-Tube System allows an operator to evaluate the level of gas a worker is exposed to over a time period such as a working shift.

The Dosi-Tube is easily clipped into the Dosi-tube holder (GAS710) which is worn on a garment of clothing.

Performance

Measuring Range

2.5 to 1000ppm

Sampling Hours

0.5 to 10 hours

Detecting Limit

0.5ppm (10 hours)

Colour Change

Purple       Yellow

Reaction Principle

Ammonia neutralizes analyzing agent to discolour the indicator to yellow.

Coefficient of Variation

10% (for 25 to 500 ppm・hr)

Shelf Life

Up to 3 years from point of manufacture

Corrections for
temperature & humidity

Temperature correction is necessary

Store the tubes at cool and dark place.

 

Possible coexisting substances and their interferences

 

Substance

Concentration

Interference

Change colour by itself

Amines, Hydrazine

-

Plus error

Produce yellow stain.

Aromatic amines

-

No effect

No discoloration

 

Other substance measurable with this detector tube

 

Substance

Correction Factor

Sampling Time

Measuring Range

Dimethylamine

0.75

0.5 to 10 hours

1.9 to 750 ppm

N,N-Dimethylethylamine

1.6

4 to 1600 ppm

Hydrazine

0.65

1.6 to 650 ppm

Triethylamine

2.1

5.3 to 2100 ppm

           

Calibration gas generation

Permeation tube method

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Product Downloads

View FileGastec Detector Tube List 23rd Edition & Manual
View FileGAS3D Ammonia Datasheet
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