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Field Contamination Patterns
•
Non-homogeneous distribution even
with homogeneous contamination
•
Sporadic without detectable source
•
Directional because of known
source
Current Industry Sampling Programs
•
Routine without cause (no apparent
contamination risk factors)
•
Testing for-cause (because of a potential
contamination risk)
•
Investigative sampling
•
Field sampling patterns
•
Sample size and collection
•
Sampling the whole plant vs. individual
leaves
•
Limitations because of product perishability
and inherent shelf-life limitations