Packages can be in sampling.Logical formLearned from2 sentences. (Drug manufacturers) may undergo a sampling.Logical formLearned from2 sentences. A (sampling and testing) may pertain-to a government-agency.Logical formLearned from2 sentences. (Drug products) can be for (sampling and testing).Logical formLearned from2 sentences. (Drug sampling surveys) may involve a collection of (drug substances).Logical formLearned from2 sentences. (Sampling methodologies) can be valid.Logical formLearned from2 sentences. Sampling can be at (expansion plants).Logical formLearned from2 sentences. (Characterization sampling) may be performed in response to results.Logical formLearned from2 sentences. (Air sampling) may be performed during an attack.Logical formLearned from2 sentences. Some patterns can be constituted-of-or-filled-with (surface sampling results).Logical formLearned from2 sentences. Positive results may be obtained in (research sampling).Logical formLearned from2 sentences. (Characterization sampling) may be performed.Logical formLearned from2 sentences. Methods may be used for sampling.Logical formLearned from2 sentences. Sampling may be performed at facilities.Logical formLearned from2 sentences. Sampling may be warranted at facilities.Logical formLearned from2 sentences.