Objective:To participate in the validation of the detection ability of benzoic acid and sorbic acid in dairy beverages,verify the laboratory detection ability,and ensure the reliability and authority of the detection results.Method:Follow the instructions for proficiency testing and the GB 5009.28-2016 to test dairy beverage samples.Result:The Z-values of benzoic acid and sorbic acid detection in sample 064 were-0.86 and 1.13,respectively,with|Z|≤2.The evaluation of the results was satisfactory and the ability verification was successfully passed.Conclusion:By participating in proficiency testing,the ability level of laboratory detection of benzoic acid and sorbic acid parameters has been consolidated,which is of great significance for ensuring local food safety.
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