Soil Price List	References for Soil Procedures
Other Sites for Soil Information	Conversion Factors

The SWAT Laboratory participates in the North American Proficiency Testing Program as a means of checking the overall QA/QC in soil and plant analyses.  This program is directed through the Soil Science Society of America by
Dr. Robert Miller (970-686-5702) (rmiller@lamar.colostate.edu) of Colorado State Unveristy.

Soil and Plant materials used in the NAPT program are available for sale.  Contact Janice Kotuby-Amacher, Utah State Analytical Laboratory Director, Utah State University at 435-797-0008 or by E-mail at jkotuby@mendel.usu.edu for more information on the cost and availability of these materials.