reference information
Nutrient Testing Laboratories
Laboratories that test soil, plant tissue, water and soilless media — compiled by the Purdue Plant and Pest Diagnostic Laboratory.
Questions? Contact the PPDL
Tom Creswell
765-494-8081
creswell@purdue.edu
Before you send a sample
Check each laboratory’s website for complete information on the services offered, current costs, and how to package and ship samples. Several of these labs offer comprehensive testing for soil, plant tissue and water.
Soil, Plant Tissue & Water Testing
Nine independent and university laboratories, listed alphabetically.
University of Wisconsin Soil Testing Laboratory
4702 University Ave., Madison, WI 53705
Soilless Media Testing
For growing media used in greenhouse or nursery production.
Note: Contact information for these labs is provided solely as a convenience to our clients and is not intended as an endorsement of their services, or a lack of endorsement for those not listed.