– Use the report’s decision trees to evaluate each of your product-package combinations annually.
TR 27 advocates for deterministic methods where possible, while acknowledging the historical use of dye ingress for many products. pda technical report 27 pdf
: Methods for establishing a correlation between physical leak tests and microbial ingress. – Use the report’s decision trees to evaluate
Defining what constitutes an "integral" package and setting scientific limits for leak rates Test Method Selection: pda technical report 27 pdf