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:

5/25/22 1905 Green

5/26/22 1905 Green SCC

Previous Results:

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

4/27/22 1901 Blue

4/28/22 1901 Blue SCC

4/20/22 1900 Black

4/21/22 1900 Black SCC

4/13/22 1899 Green

4/14/22 1899 Green SCC

4/6/22 1898 Blue

4/7/22 1898 Blue SCC

3/30/22 1897 Black

3/31/22 1897 Black SCC

3/23/22 1896 Green

3/24/22 1896 Green SCC

3/16/22 1895 Blue

3/17/22 1895 Blue SCC

3/9/22 1894 Black

3/10/22 1894 Black SCC

3/2/22 1893 Green

3/3/22 1893 Green SCC

2/23/22 1892 Blue

2/24/22 1892 Blue SCC

2/16/22 1891 Black

2/17/22 1891 Black SCC

2/9/22 1890 Green

2/10/22 1890 Green SCC

2/2/22 1889 Blue

2/3/22 1889 Blue SCC

1/26/22 1888 Black

1/27/22 1888 Black SCC

1/19/22 1887 Green

1/20/22 1887 Green SCC

1/12/22 1886 Blue

1/13/22 1886 Blue SCC

1/5/22 1885 Black

1/6/22 1885 Black SCC

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