You did not indicate what kind of testing you needed.
 
Dr. Allan Brouse has a chemical analysis company in Maryland that has done
extensive foor testing for adulteration.  His work has been used in court to
convict companies of adulterating orange and honey.   He can be contacted at:
 
Analytical Chemical Services of Columbia
9151 Rumsey Road, Ste 190
Columbia MD 21045 USA
410-730-7782, 410-730-8340 fax
 
Regards,
David Morris
Laurel, MD