# What's inside of a 15 year old can?

**URL:** <https://boards.straightdope.com/t/whats-inside-of-a-15-year-old-can/184019>\
**Category:** Factual Questions\
**Created:** [June 24, 2003, 1:48pm UTC](https://boards.straightdope.com/t/whats-inside-of-a-15-year-old-can/184019 "2003-06-24T13:48:48Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![Mort\_Furd](https://avatars.discourse-cdn.com/v4/letter/m/8e8cbc/32.png) [@Mort\_Furd](https://boards.straightdope.com/u/Mort_Furd)\
**Post date:** [June 26, 2003, 7:56pm UTC](https://boards.straightdope.com/t/whats-inside-of-a-15-year-old-can/184019/21 "2003-06-26T19:56:08Z")

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Eh. “ppm” generally means “parts per million.” Hence the confusion.

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**Author:** ![deb2world](https://avatars.discourse-cdn.com/v4/letter/d/7cd45c/32.png) [@deb2world](https://boards.straightdope.com/u/deb2world)\
**Post date:** [June 26, 2003, 8:14pm UTC](https://boards.straightdope.com/t/whats-inside-of-a-15-year-old-can/184019/22 "2003-06-26T20:14:45Z")

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> [@](#):
>
> \*Originally posted by Mort Furd \*  
> \*\*Eh. “ppm” generally means “parts per million.” Hence the confusion. \*\*

Yes you ar correct now that I think about it. (Note to self: do not post first thing before caffeine). I think the time is in sec. so what you end up with is a number something like 10E-9 ppm/s. That is one small leak. Hopefully I have not muddied up the waters more. The important thing is that there is no such thing as a perfect seal.

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