This tube is suitable for the passive monitoring of Ammonia (NH3), due to the very low detection limits our diffusion tubes are able to detect even slight levels of Ammonia pollution if present.


Sources of Ammonia in ambient air:

  • Decaying organic matter – e.g. sewage.
  • Agriculture – particularly cattle, pig and poultry farms, application of slurry.
  • Fertilisers.
  • Manufacturing – plastics, pharmaceuticals, rubber, petrochemicals.
  • Industrial and combustion processes.
  • Catalytic converters


Potential implications Ammonia pollution:

  • Unpleasant odour.
  • Damage to vegetation.
  • Soil acidification.
  • Conservation areas are at risk of Ammonia deposition – heathland, moorland, bogs – pollution may cause a change in plant species


For more information select the downloads option below to download a copy of our instructions or techsheet for this tube.

The highest concentrations of ambient Ammonia pollution are expected in areas with most livestock farming or where Ammonia is industrially produced. Our diffusion tubes can be applied to a wide variety of situations:

  • Outdoor ambient air monitoring in proximity to agricultural or industrial facilities and sewage treatment facilities.
  • During production of products containing Ammonia.
  • Indoor air sampling in animal sheds or for workplace monitoring during manufacture.
  • Environmental assessments of conservation areas.
  • Urban monitoring.

DIF400RTU-RA – Supply and analysis of Ammonia diffusion tube.


Tube holders sold separately:

DIF-1000 – Plastic fixing clip

DIF-2000 – 360 mm fixing strap

DIF-2001 – 760 mm fixing strap

DIFSHLTR-S – Shelter for 3 tubes


Analysis is carried out in our UKAS accredited laboratories. Results are provided within 10 working days or can be pre-booked for fast track.

Featured Product

Washers - Pack of 10

These washers fit around the diffusion tubes allowing them to sit comfortable inside our circular clips.

Cookie Policy

This website uses cookies to ensure you get the best experience on our website