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Minnesota Department of Agriculture logo MDA header picture collage
 
2018 Certified Manure Testing Laboratories
    ROCK RIVER LABORATORY INC
    Effective Period: 01/01/2018 - 12/31/2018
    Contact: DUSTIN SAWYER ~ DUSTIN_SAWYER@ROCKRIVERLAB.COM
    710 COMMERCE DR, WATERTOWN, WI 53094
    Phone: (920) 261-0446 ~ Fax: (888) 270-4347
    Endorsements:
         NITROGEN BY COMBUSTION
         PHOSPHORUS
         POTASSIUM

MDA Contact

Jerry Floren
jerry.floren@state.mn.us
507-344-3206 • Fax: 507-387-7185
Pesticide & Fertilizer Management Division