Check Mark Laboratory

Dairy Wet Chemistry Testing

Check Mark Laboratory is a division of Dairy One and one of the leading dairy chemistry laboratories in the northeast. The laboratory conducts chemistry testing for fat, total protein, true protein, casein, total solids, lactose, titratable acidity, and direct microscopic somatic cell count.  Check Mark can analyze any liquid dairy product for these components. Please reference the sample submission form for further details.  Dairy products that Check Mark is able to analyze include (but are not limited to): heavy cream, whey, retentate, yogurt, milk replacement products, reconstituted powders, or non-bovine milk.

Check Mark is proud to offer a Retest Guarantee. We understand how important correct results are for you to operate your business successfully. Because of that, we welcome feedback about the results that we report to you. We will perform an additional analysis of any type at no cost if the retested result is significantly different from the original result. Please contact the laboratory for details and restrictions.

Please include a completed copy of the Check Mark Sample Submission Form when submitting samples.

Weekly Calibration Samples

The Check Mark laboratory manufactures raw bovine milk calibration standards each week to be used in other labs across the region. We can also develop customized calibration standards specifically for your IR analyzer to monitor your specific dairy product.

Component calibration samples are typically manufactured and shipped each Monday with results available Wednesday. Somatic cell control samples are also manufactured and shipped each Monday with results available Thursday.  

Feel free to view one of our reports posted below for an example of what our calibration sample sets typically look like. Please contact us for details, pricing, or questions. We are happy to accommodate special needs if we are able to.

For a price list or to inquire about Check Mark’s services, contact us at [email protected]

Weekly Calibration Sample Results

Current Results:

9/28/22 1923 Green

9/29/22 1923 Green SCC

Previous Results:

9/21/22 1922 Blue

9/22/22 1922 Blue SCC

9/14/22 1921 Black

9/15/22 1921 Black SCC

9/7/22 1920 Green

9/8/22 1920 Green SCC

8/31/22 1919 Blue

9/1/22 1919 Blue SCC

8/24/22 1918 Black

8/25/22 1918 Black SCC

8/17/22 1917 Green

8/18/22 1917 Green SCC

8/10/22 1916 Blue

8/11/22 1916 Blue SCC

8/3/22 1915 Black

8/4/22 1915 Black SCC

7/27/22 1914 Green

7/28/22 1914 Green SCC

7/21/22 1913 Blue

7/22/22 1913 Blue SCC

7/13/22 1912 Black

7/14/22 1912 Black SCC

7/6/22 1911 Green

7/7/22 1911 Green SCC

6/29/22 1910 Blue

6/30/22 1910 Blue SCC

6/22/22 1909 Black

6/23/22 1909 Black SCC

6/15/22 1908 Green

6/16/22 1908 Green SCC

6/8/22 1907 Blue

6/9/22 1907 Blue SCC

6/1/22 1906 Black

6/2/22 1906 Black SCC

5/25/22 1905 Green

5/26/22 1905 Green SCC

5/18/22 1904 Blue

5/19/22 1904 Blue SCC

5/11/22 1903 Black

5/12/22 1903 Black SCC

5/4/22 1902 Green

5/5/22 1902 Green SCC

If previous calibration data sheets are needed, please contact [email protected].