The following laboratories have been certified. To test your digestate, first sign up as a digestate producer.
| Organization | City | State | Phone | Website, Blog or Social Media Link |
|---|---|---|---|---|
| University of Wisconsin Oshkosh - Environmental Research and Innovation Center (ERIC) | Oshkosh | WI | (920) 424-3148 | uwosh.edu/eric/ |
| Control Laboratories Inc. (Soil Control Lab) | Watsonville | CA | 831-750-2875 | controllabs.com/ |
| A&L Canada Laboratories Inc. | London | ON | 519-457-2575 | alcanada.com/ |