[Shotimes] emissions question

[Carl Prochilo]

ppm is an absolute measurement.
-- 
Cheers,
Carl Prochilo
1992 Ultra Red Crimson

Jeremy said:
> Luckily here in Nebraska we don't do emissions testing...but on the
> reports I've seen online, they do them by parts-per-million IIRC.
> Although I guess that is a percentage, isnt it?
>
> Regards,
>
> Jeremy
>
>
> van Oss <vanOss@centurytel.net> wrote:
> I teach public speaking. A student gave a speech that has raised
> questions
> about emissions testing. Please help. I live in a small city with no
> testing. To those who live in an area with emissions testing:
>
> Test results, and numbers required to pass, are all expressed in
> terms of
> percentages, are they not? I mean, percentages as opposed to
> absolute
> amounts of various compounds per mile? So a vehicle with a larger
> volume of
> exhaust output might score well on percentages, but actually put out
> more
> total volume of these compounds --- when compared with, say, a
> vehicle with
> a smaller exhaust volume but percentage-wise "dirtier" emissions?
>
> Any help appreciated.
>
> VO
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