Our Processes & Certifications


All testing is done in a secure area with your integrity in mind. From the start, we provide easy and transparent means of information transfer.

Compliance & Reporting

CTL works with customers to develop a customized, objective analytical testing and compliance determination program. Sample Collection Services, Regular Analytical Testing of Product Samples, Computerized Data Analysis for Compliance Evaluation, Follow-up as Desired, e.g. Summary Compliancy Reports.


We consider all of our clients as partners. Your efficiency is our business.

Featured Services

Testing and Compliance

Food & Dairy Products



  • Salmonella
  • Listeria
  • C P Staph
  • E.coli
  • E.coli O157:H7


  • SPC
  • Coliforms
  • Yeast and Mold


  • Fat
  • Protein
  • Ash
  • Moisture
  • Minerals, and more…

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Water Testing

Available Tests

  • Coliform Bacteria
  • Nitrate
  • Iron
  • Hardness
  • pH
  • Lead
  • Copper
  • Nitrite
  • Arsenic
  • Manganese
  • Magnesium
  • Calcium
  • Fluoride

Read More
Compliance Monitoring

Customized Tests

  • Fat
  • Protein
  • Total Solid


  • Fructose
  • Glucose
  • Sucrose
  • Lactose
  • Maltose – (Available upon request)

Read More

Here is how to move forward....


Meet CTL

A Team Committed To Excellence

Visit Us

Our facility is available for tours upon request.
514 Main Street, Colfax, Wisconsin 54730

Have Questions?

Call or email us with any questions. 715 962 3121


We have reliable and accurate lab instruments and staff for all services we offer.


By following federal and state guidelines along with proper practices, we provide accurate and reliable testing.