Figure 3. The cumulative probability of detecting sporadic contamination with different replicate effort at the sample replicate or PCR replicate level (x-panels) for each workflow step (y-panels) when contamination is not intentionally introduced but negative samples are processed in isolation (All negative) or in parallel with highly positive samples (Mixed) or six-point standard curve series (Standard curve). Shaded areas indicate 95% credibility intervals for each treatment level.