Diesel Testing is pretty prominent in light of the switch from Low Sulfur Diesel to Ultra-Low Sufur Diesel. 500ppm to 15ppm for limits. Serveral laboratories offer this type of testing. One in particular provides supplies/kits with their analysis.
Midwest Laboratories http://www.midwestlabs.com
In addition, microbial growth is another diesel test which is very poular too. Same site has information on this test. Check around and let me know if $47.50 is a good price.
