DAKOTA Analytical


At DAKOTA Analytical, we offer complete soil testing for the golf course and sports fields industries. Analyzing the health of your existing rootzone can assist in lowering input costs, lessen disease pressure, and allow for enhanced management under high stress by ensuring the material is favorable for the environment. Our full-service physical soil testing laboratory is accredited by the American Association for Lab Accreditation (A2LA) and is in place to promptly provide the answers you need to efficiently manage the turf in your care.

We specialize in quality assurance on construction projects and can test your completed mixes or create the proper custom blend for your project. We are able to test any rootzone material, including peat, soil, mulch, compost, rice hulls, sphagnum, and inorganic, as well as any material used for drainage or bunkers.



To submit a sample for analysis, please click the button below and download our DAKOTA Analysis sample submittal form. Once completed, please send the form along with your sample to DAKOTA Analytical, Inc., 833 Gateway Dr. NE, East Grand Forks, MN 56721. For instructions on taking soil or undisturbed soil samples, please see below.

  • Submit a one-gallon sample of every material to be tested. Small quantities of materials may not be representative of the entire mix and can lead to misleading interpretations of the results.
  • Samples should be taken from several places in the pile, and should be taken with probes to get samples from inside the piles. Mix all samples thoroughly to eliminate any chance of a non-representative sample.
  • Place composite soil sample in one-gallon Zip-Lock plastic bags. Seal the bag and put it into a second Zip-Lock bag, with the top of the first bag at the bottom end of the second bag. Seal the second bag. Double bagging will lessen the chance of sample bag opening and spilling before reaching lab.
  • Straight sand samples should be taken, mixed, and bagged as described above.
  • Mark all samples so that they are easily identified. Using a black permanent marker to write on the plastic bags will usually be the best method of marking the sample.
  • For existing greens, use soil probes and sample to the depth of the rootzone, usually 12 inches. Take approximately 10 probes for each green, from various locations on the green. Mix the sample thoroughly and place the composite sample in double Zip-Lock bags as described above.
  • Send sample to:
    DAKOTA Analytical, Inc.
    833 Gateway Dr. NE
    East Grand Forks, MN 56721
    Phone: 701.746.4300
    Fax: 218.773.3151
  • Test results will take 1-5 business days from date received, depending on the tests requested. Results will be e-mailed to you upon completon of all tests requested and hard copies can be mailed to you if needed. Please include the company name, contact person, phone, fax, tests requested, and who to bill with the sample.
  • Cut 2" PVC pipe into a section long enough to reach 6 inches into the green. The PVC pipe diameter must be 2" to fit our equipment.
  • Sharpen one end of the pipe to penetrate the green.
  • Drill two holes opposite each other near the tip of the opposite end of the pipe so that a metal rod can be inserted as a handle to remove the core.
  • Pound the PVC pipe into the green. If greens are old push-up greens, pound the pipe as far as it will go (6" minimum).
  • Remove the core, pack each end with paper, tape both ends with duct tape, and pack cores securely for shipping.
  • Send samples to:
    DAKOTA Analytical, Inc.
    833 Gateway Drive, NE
    East Grand Forks, MN 56721
    Phone: 701.746.4300
    Fax: 218.773.3151
  • A complete Rootzone Analysis will be performed on the top 3" core. This includes a physical analysis (ASTM F1815), complete particle size analysis (ASTM F1632), organic matter analysis minus the top 1/4" layer (ASTM F1647, method 2), and pH and USGA™ recommendations for putting green rootzone mixture.



DAKOTA Analytical is driven by the goal of providing customers with the highest quality information possible through the use of contemporary and advanced practices. Emphasis on quality is underscored by the total commitment of management to good, professional laboratory practice and to the quality of its testing, calibration and quality assurance program. Management's commitment is to comply with the ISO/IEC 17025 Standard and to continually improve effectiveness of the management system. All laboratory personnel concerned with testing and calibration activities will familiarize themselves with the quality documentation and implement the policies and procedures in their work. This total commitment is the foundation of a high-quality testing service that allows us to provide customers with accurate, meaningful, and timely information.


DAKOTA Analytical is zealously protective of customer information, and maintains strict and absolute customer confidentiality. Confidentiality is maintained by placing written, mutual confidentiality agreements into force; releasing information to third parties only upon the express, written authorization of the customer; and taking precautions to ensure confidential transfer of information between Dakota Analytical and its customers by facsimile (fax), e-mail, and telephone.


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