Modeling of recovery efficiency of sampling devices used in planetary protection bioburden estimation.

For most practical purposes, there does not appear to be a strong trend between recovery efficiency and the inoculation level, although there appears to be an ∼2× increase in recovery efficiency of the TX3211 wipe once exceeding a certain target inoculation level between 160 and 400 CFU.

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When observations with a target inoculation level of 400 CFU are included in the model, there is an evident trend that is statistically significant as judged by the 95% credibility interval of the parameter γ 1 for the TX3211 wipe (Fig. 2G).

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