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. 2024 Sep 16;8:txae138. doi: 10.1093/tas/txae138

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© The Author(s) 2024. Published by Oxford University Press on behalf of the American Society of Animal Science.

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Figure 9. — Illustrative example of a SPC chart depicting log RLU from the sow feeder using a Charm novaLUM II-X (top), 3M Clean-Trace (middle), or Neogen AccuPoint (bottom) ATP luminometer. A cleanliness threshold was established as +3σ of observations above the mean observations for each luminometer. The calculated cleanliness threshold for each unit was 7.24 log (17,251,154 RLU) for the Charm novaLUM II-X, 4.68 log (48,359 RLU) for the 3M Clean-Trace, and 4.06 log (11,485 RLU) for the Neogen AccuPoint.