GET A FREE DESIGN CONSULTATION
NEXT WORKING DAY DELIVERY when you order before 2pm
REQUEST A CREDIT ACCOUNT
GAS3D Ammonia Passive Dosi-Tube 2.5 – 1000ppm
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.
|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|
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|
|Multi Gas Tags||
Ammonia (NH3), Dimethylamine ((CH3)2NH), Hydrazine (N2H4), N-N-Dimethylethylamine (C4H11N), Triethylamine ((C2H5)3N)
Talk with the Experts
Contact us - Our application specialists will identify the best gas monitoring equipment for your needs based on the information that you can provide. If you're unsure about what's important, consider booking a site survey.
Book a site survey - Our specialists consider your process, your site conditions and work with you to understand your needs. It is the most effective means of ensuring your system is completely fit for purpose.