Capturing the elusive nanoparticle


Graphic defines local exhaust ventilation, source capture and fume extraction.Recently we came across a 2008 issue of the Journal of Occupational and Environmental Hygiene.

In it, an engineering case study described NIOSH research into the effect of local exhaust ventilation on the control of engineered nano particles.

Because the topic connects engineered nanoparticles with local ventilation, many Sentry Air staffers were interested in the article.

When they saw Figure 1, they became downright enthusiastic about it. Why? Because it shows the unit that provided the local ventilation – and it’s our Model 300 portable fume extractor.

Figure from study shows Sentry Air Model 300 portable fume extractor.

Excerpt, Journal of Occupational and Environmental Hygiene June 2008


Study offered no product-specific recommendation, but…

We’ve known our welding fume extractors are very effective at capturing combustion-derived nanoparticles.

For example, third-party testers documented a reduction in hex chrome in welding fume by our Model 300 of 99.9%.

The behavior and toxicity of airborne engineered nanoparticles continue to be researched, posing an interesting question for us.

Can we capture engineered nanoparticles with the same technologies and techniques?

Results of this study suggest we can and we do.

Study excerpts

Text excerpt from study featuring Sentry Air Model 300 portable fume extractor. Table excerpt from study featuring Sentry Air Model 300 portable fume extractor.

The study’s acknowledgement

Sentry Air Model 300 Portable Fume Extractor.

The Model 300 Portable Fume Extractor has been in use since 2003, helping to provide respiratory protection from nanoparticles to a varied set of workers, from welders to lab techs.

The authors conclude that fume extraction at the source can be highly effective in controlling the emissions of engineered nanomaterials to prevent their spread.

They say, “This finding, coupled with the current use of PPE, appears to be an acceptable method of reducing the potential for worker exposure.”

You can read the entire study on our website.

Seeking to control nanoparticles at your shop?

If nano-scale substances are an issue in your workplace, please give us a call at 800.799.4609, email, or use the comment form below or on our website pages.

Our Applications Specialists will work with you to create a solution for your situation.




Effectiveness of Local Exhaust Ventilation (LEV) in Controlling Engineered Nanomaterial Emissions During Reactor Cleanout Operations
Journal of Occupational and Environmental Hygiene, Volume 5, Issue 6, 2008

Protecting the Nanotechnology Workforce, NIOSH Nanotechnology Research and Guidance Strategic Plan, 2013 – 2016.