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You’ve received a result that the vitamin E in your premix is 85% of the expected level. What does this mean exactly? Is this a problem?
The AAFCO Official Publication lists the allowed variation to the guarantee for a variety of nutrients. In the case of vitamins, this can range from +/- 45% for a small inclusion ingredient such as vitamin B12 to +/- 20% for a vitamin included at higher quantities such as vitamin E. This means that an analytical result of 80% to 120% of your expected level is considered acceptable.
But what feeds into this 85% result that you’re seeing? Variation can be attributed to several different factors. This includes (but is not limited to):
1) The Manufacturing Process
2) Sampling variation
3) Between lab variation (lab-to-lab)
4) Within lab variation (technician-to-technician)
5) True analytical variation (method)
When you consider the above sources of variation and the sample size required to conduct the test is between 1 gram and 5 grams to represent an entire batch of premix, a result of 85% of your target level is excellent!
Want to learn more on this topic or have additional questions? Please reach out to your DSM account representative.
21 February 2022
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