Engine displacement is measured in liters or cc as standard. Harley Davidson demands in using cubic inches though.

Also anyone working federal contract workers won’t have to be worried. My company no longer drug tests because I’m employed in a legal state but the company prohibits pot use and will drug test if the federal contracts asks for it.

Not op, I’m not seeing anything about calibration for PM or VOC just stuff for open air bump tests. Interesting alternatives to filter load and PIDs I wonder if they’re robust enough to find their way into EPA or OSHA level investigations, I haven’t run across them yet