Download some of our Brochures:

Dairy & Food Testing

Water Activity Testing

Pickle Bill (pH Testing)

Test your Water Lately?

Liquid Sucrose Test Kit

Meat Testing


Let Commercial Testing Laboratory, Inc., of Colfax, Wisconsin, provide you with credible and accurate testing services.

Our Analytical Food and Environmental Testing Labs maintain the approved methodologies and produces reliable testing results that would help provide a positive impact on your business.

Here are just a few of the services we provide:

Food & Dairy Products Testing Services

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

- Coliforms
- Yeast and Mold

- Fat
- Protein
- Ash
- Moisture
- Minerals, and more...

Environmental "Water" Testing Services

We test for:
- Coliform Bacteria
- Nitrate
- Iron
- Hardness
- pH
- Lead
- Copper
- Nitrite
- Arsenic
- Manganese
- Magnesium
- Calcium
- Fluoride ... Just to name some of the testing services we offer...

Commercial Testing Laboratory, Inc. is fully certified by the State of WI DNR
(including Safe Drinking Water Act (SDWA) which is the main federal law that ensures the quality of Americans' drinking water.)

Bacteriological Testing of Private and Public Drinking Water supplies

Environmental Water Testing and Plant Sanitation:

- Wastewater
- Groundwater
- Drinking Water
- and Sludge


- Coliform
- Yeast & Mold also Air Monitoring Plates

Have questions or need one of our services?
Email us at

or HomerM@ctlcolfaxcom

Colfax, Wisconsin - U.S.A.
Phone: (800) 962-5227 - (715) 962-3121 - Fax.: (715) 962-4030

All rights reserved
2011 CTL Incorporated