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Vent Emission

Many industrial processes release gases, dust and vapours through vent outlets, smaller openings used for process exhaust, storage tank breathing, or equipment relief, separate from the main chimney or stack. These vent emissions are often overlooked, yet they can carry pollutants that affect air quality and require regular monitoring under environmental norms.

Sawen Group is a QCI and NABL accredited environmental laboratory based in Lucknow. We test vent emissions from factories, storage facilities and processing units to confirm that gases and particles released through these outlets stay within safe and permitted limits.

If your facility has process vents, storage tank vents, or equipment relief points and you need to check what is being released into the air, our team can guide you through the complete testing process.

What is Vent Emission Testing?

Vent emission testing means measuring the gases, dust and vapours released from a vent outlet, a smaller exhaust point used for specific equipment, storage tanks or process operations. Unlike a main stack that handles a facility's primary exhaust, vents are usually connected to individual machines, tanks or process units.

The test involves collecting samples directly from the vent outlet and analysing them for pollutant concentration. This helps confirm whether the emissions released through that specific point meet the permissible limits set by pollution control authorities.

Vent emission testing is done for:

  • Process vents in chemical and manufacturing units
  • Storage tank vents releasing vapours
  • Dryer and oven exhaust vents
  • Reactor and equipment relief vents
  • Any point source releasing gases or particles separately from the main stack

Key Parameters Checked in Vent Emission Testing

Parameter What It Tells You?

Volatile Organic Compounds (VOCs)

Chemical vapours released from process or storage vents

Particulate Matter

Dust or fine particles escaping through the vent

Sulphur Dioxide (SO2)

Gas commonly linked to certain industrial processes

Nitrogen Oxides (NOx)

Gas released from combustion-related processes

Ammonia

Present in specific chemical and processing operations

Flow Rate and Velocity

Helps calculate the total quantity of pollutants released

Temperature

Affects how pollutants disperse once released

Why Choose Sawen Group for Vent Emission Testing?

  • NABL and QCI accredited laboratory with certification number T-2091
  • More than two decades of experience in environmental consultancy since 1998
  • In-house testing facility, ensuring faster analysis and report delivery
  • Experienced technical team trained in vent sampling across different industries
  • Complete support, from testing to process improvement guidance
  • Trusted by government bodies and private companies, including names like ISRO, Adani, AAI and REC
  • Based in Lucknow, with service reach across Uttar Pradesh and other states

How to Book Vent Emission Testing?

  1. Call us at +91 7379444475 or WhatsApp us at +91 7379444471
  2. Or email your requirement to consultancy.sawens@gmail.com
  3. Or fill in the Request for Proposal form on our website with your details and requirement
  4. Our team will contact you to schedule vent testing and share the cost and timeline

Get Your Vent Emission Testing Quote Today.

OUR FAQ

Frequently Asked Questions

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Vent emission testing focuses on smaller outlets connected to specific equipment, tanks or processes, while stack emission testing measures the main chimney handling a facility's overall exhaust. Both are important for complete emission monitoring, and Sawen Group offers both services.

This depends on your facility layout and the processes connected to each vent. Our team assesses your site and identifies which vents need regular testing based on the materials handled.

Yes. Sawen Group is a NABL accredited laboratory (Certification No. T-2091), and our vent emission reports are accepted for environmental compliance and regulatory documentation.

Our team reviews the results and suggests corrective measures, such as process adjustments or installing suitable emission control equipment, depending on the source.

This depends on the type of process and materials handled. Many industries test vents quarterly or half-yearly as part of their ongoing compliance requirement. Our team can suggest a suitable schedule.

Yes. We offer combined testing packages that cover vent, stack and fugitive emissions together, saving time and giving you a complete picture of your facility's air emissions.

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