Air Quality in Travel Trailers/Motorhomes? Testing?

[Guest guest]

Hello,

I've been looking for a used travel trailer or motorhome. Can anyone

tell me if it's possible to test for air quality (especially

formaldehyde) before buying? Any suggestions for ensuring good air

quality would be appreciated.

I would also be interested in any links to websites, books, journals

that might apply.

Finally, if anyone could suggest a consultant, I would appreciate that,

too.

Thank you!