Investigation summary: lot analysis: per review of the dhr¿s it was concluded that all required challenges samples and testing was performed per specification in accordance with the set-up and in process sampling plans.Set-up and in-process samples (included but not limited) blister thickness, bad seal/cut/holes, seal transfer width and package leak test were performed on various stages throughout the process, all the inspections passed per specifications.Visual analysis: observations and testing: received two unused iag 20ga unit in partially opened packages from the lot number; 7131877.Visual/microscopic examination: one package was opened at the bottom of the blister pack.One package was opened at the top of the blister pack.The analysis of top web adhesive: the product characteristics require a minimum of 1/8¿ seal transfer.This characteristic was met.In addition, the paper top web of the returned unit was analyzed under uv light.The glue used to seal the top and bottom webs is uv fluorescent.The analysis revealed an adequate of top web adhesive.The key variables that affect seal strength are: seal transfer/width and top web glue.Both variables were looked at during the investigation.Investigation conclusion: the defect package seal integrity poor/questionable, as stated as the reported coded was confirmed with the returned unit.Even though the packages came partially opened, all the processes characteristics that directly influence the seal strength are: seal transfer and top web glue, measured within specification.No anomalies were found.
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