Approved Soil Testing Laboratories


N-Watch has several recommended and approved soil testing laboratories located throught the midwest and southeast Canada.  N-Watch continues to contract more soil labs to assist with the growing demand for sample analysis.  Please view the list below for the laboratory loacated nearest to your sites.


Illinois | Indiana | Wisconson | Ohio

A&L Great Lakes Laboratories, Inc. is an independently owned and operated agricultural laboratory located in Fort Wayne, Indiana. Established in 1976, it provides agricultural analyses to the Great Lakes region and beyond. We’ve been committed to staying at the forefront of the agricultural services industry. We’ve continually expanded our testing and analytical capabilities to include all of the latest technologies as well as a wide variety of sample matrices including soil, plant, feed, fertilizer, manure, compost and water. Along with a growing menu of services, we have hired some of the finest agronomists and lab technicians available to work out of our 22,000-square-foot laboratory located in Fort Wayne, Indiana.



Established in 1993, United Soils, Inc. is a full service soil testing business. United Soils has served Illinois and surrounding states for 20 years with quality and reliable analysis of growers soil fertility. We offer the full spectrum of soil testing, including Macro and Micro Nutrient analysis. All tests are performed under strict quality control that meets the standard of the Land Grant college of the University of Illinois. The United Soils lab also offers both Soybean Cyst Nematode and Corn Nematode testing along with a full season Nitrogen testing program. Plant tissue analysis was recently added to the testing program and our staff is available to discuss what tests would fit your needs. United Soils has a full crew of employees to pull samples using GPS software to map sample locations and field boundaries to complete your testing package. Three full-time Agronomists are available to discuss any questions related to your analysis and fertility program.




In today's competitive market, producers can't afford to make decisions without complete and accurate information. That's why so many producers consult Sure-Tech Laboratories offering a full range of agricultural testing services. Sure-Tech provides timely, cost-effective and reliable analysis of feed ingredients, feeds and forages as well as soil, manure, water, plant tissues and SCN.



Solum’s mission is to make agriculture easier and more productive. We develop software and soil measurement technology to help growers and their advisers manage farms more efficiently. We are excited to be at the intersection of better measurements, cloud software, mobile and big data analytics for one of the world’s largest and most important industries. Solum is located in Ames, Iowa, where we operate a state-of-the-art soil testing laboratory. Our customers include growers, agronomists and retail organizations throughout the Midwest.
The company is owned by The Climate Corporation.



The Memphis lab operates out of our state-of-the art facility in east Memphis. This 30,000 sq ft. facility has been expanded multiple times to better serve our clients, to develop more efficient systems and processes and to accommodate the 300% growth in agriculture, microbiology, and environmental testing. In 2004 we moved from our old 11,000 sq. ft. laboratory where we had resided since 1979, to our new facility.


Ontario, CA

A&L Canada Laboratories Inc.(A&L) was formed in 1985 with the merger of Croptech Laboratories. The new corporation is a wholly owned Canadian subsidiary of A&L Laboratories which consists of eight analytical laboratories regionally located throughout North America. Located in London, Ontario, A&L is one of Ontario's largest Agricultural and Environmental Laboratories specializing in soil, plant tissue, fertilizer and water testing. For over 30 years A&L has provided reliable, comprehensive, effective services for analytical testing. This includes having a variety of professionals in the fields of chemistry, agronomy, and environmental science, available to discuss individual needs and provide technical guidance. Our agronomists and certified crop specialists can also provide complete nutritional consultation and help customers expand existing programs through GPS (Global Positioning Satellite Sampling) techniques. Our Environmental division provides Inorganic Chemistry, Organic Chemistry, General Chemistry and Pesticide analysis using state of the art technology and methodology.


 SGS Agri-Food Laboratories

Agri-Food Laboratories Inc. is a full service analytical facility located in Guelph, Ontario, serving Canadian and international clients since 1984. We offer high quality, reliable services providing Measurements for Management to all sectors of the agricultural industry, including analysis of feeds & forages, soils, fertilizers, plant tissue and greenhouse media and solutions.



Recently Added Laboratories


N-Watch is working with soil testing laboratories throughout the midwest and the nation to help expidite the soil anaylizing process. We strive to add more laboratory options to make testing convenient for your site results as possible. Please check back here for the latest additions to the N-Watch site.



Servi-Tech operates three state-of-the art laboratories, centrally located in the heart of The Great Plains. The first laboratory was started in Dodge City, Kansas in 1977. The steady growth in sample volume resulted in building another laboratory in Hastings, Nebraska. The Hastings laboratory opened in November of 1988. Further growth required expansion of the Dodge City laboratory in 1990, and again in 1996. In 2004, Servi-Tech opened their third laboratory located in Amarillo, Texas. The network of laboratories allows Servi-Tech to provide accurate results, rapid turnaround time, and quality customer service.


The professionals at Servi-Tech understand that analytical results received from the laboratory are used to make decisions that affect their customer’s bottom line. Each individual sample is considered as an important part of a producer’s total management process. Servi-Tech appreciates their customers’ business.



Headquartered in Watertown, Wis., Rock River Laboratory provides production assistance to the agricultural industry and beyond, through the use of advanced analytical systems, progressive techniques, and research-supported analyses. Employing a team of top specialists in their respective fields, Rock River Laboratory is built on providing accurate, cost-effective, and timely analytical results to customers, while featuring unsurpassed customer service.

Rock River Laboratory’s 38 years of agriculture analysis experience in the materials of soil, plant tissue, water, manure, and feedstuffs, among others, has provided the basis for breakthrough research, historical analysis data trend insights, and most importantly, industry trust. Dedicated to their customer’s business and at-home needs, Rock River Laboratory derives accurate, helpful solutions founded on research, technical expertise, field experience, and progressive techniques.


Plant Summary Report Example (PDF)