Recognizing laboratories that demonstrated accuracy, repeatability, and full participation in the OOCC Annual Ring Test Program.

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The OOCC Annual Ring Test Program evaluates laboratory consistency and performance in measuring olive fat and moisture content. Participating laboratories analyze identical samples throughout the season, allowing results to be compared for accuracy, repeatability, and alignment across the industry. The program helps support fair growers payments, reliable harvest decisions, and confidence in laboratory testing.

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​Official Method

• ​California Olive Ranch
• Modern Olives Laboratory 
• UC Food Quality 
• Eurofins Food Chemistry Testing Des Moines, Inc.

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Secondary Method

• California Olive Ranch 
• Modern Olives Laboratory 
• Corto Olive Company
• G&S Milling
• The Mill at Kings River, LLC
• Eurofins QTA, Inc. 

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These laboratories were recognized for:
Full participation in the program
Demonstrated accuracy and repeatability
Completion of all testing requirements