News & Updates

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Individual in the field determining the opacity of black smoke being emitted from an industrial smoke stack.

How to Determine Black Smoke Opacity At Smoke School

Check out this video that shows you how to determine the opacity of black smoke on a smoke school test. It includes a helpful tip on setting a range when assessing the opacity of black visible emissions.

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Individual in the field determining the opacity of white smoke being emitted from an industrial smoke stack.

How to Determine White Smoke Opacity At Smoke School

Check out this video that shows you how to determine the opacity of white smoke on a smoke school test. It includes a helpful tip on setting a range when assessing the opacity of white visible emissions.

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Results of a EPA-published study showing VR Smoke School students observe opacity more accurately than students trained at in-person smoke school.

VR Smoke School Student Accuracy Results from an EPA Study

EPA-published study results show VR Smoke School-trained observers were 55.1% more accurate on white smoke and 25.5% more accurate on black smoke.

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EPA Method 9 certified observer making opacity observations on visible emissions from a smoke stack and the quick reference sheet next to the observer.

Free EPA Method 9 Reference Sheet for Visible Emissions Observers

Download our free EPA Method 9 Reference Sheet with field observation requirements, practical opacity tips and common plume shapes. No credit card required.

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VR Smoke School Administrator Account screenshot showing management of EPA Method 9 certifications for an organization.

Administrator Accounts Now Available

If you oversee EPA Method 9 certifications for multiple students, our VR Smoke School Administrator Accounts will allow you to manage student certifications from one dashboard.

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EPA Method 22 observation form and free instructions included in the VR Smoke School online lecture.

Free EPA Method 22 Observation Form

Download the free EPA Method 22 observation form to observe the presence of visible emissions. Check out our free online lecture for instructions on how to complete the form.

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