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.
Swine Milk Analysis
The analysis of milk from swine or pigs has multiple benefits for the overall health of the animal. The first lactation of a sow is key for her lifelong milk production. Collecting and testing milk from the pig will give a full picture of the nutrient levels in the milk, and how much she can produce.
This leads to a second benefit of testing swine milk, the impact on piglets. Since piglets require colostrum and milk from the sow shortly after being born, it’s important to know what nutrients are present in it. If crucial nutrient levels are low, it may require intervention or additional feedings to help support piglet success.
Samples submitted to Dairy One Check Mark Laboratory can be collected by owners themselves. Kits for doing so can be ordered on the Shop page.
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:
9/1/2026 2128 Black Component Calibration
Previous Results:
8/25/2026 Somatic Cell Control
8/25/2026 2127 Green Component Calibration
8/19/2026 Somatic Cell Control
8/18/2026 2126 Blue Component Calibration
8/13/2026 2125 Somatic Cell Control
8/11/2026 2125 Black Component Calibration
If previous calibration data sheets are needed, please contact [email protected].