In Microbiology Slideshare !!top!! | Quality Control
The QC data showed the truth: The batch was sterile. The contamination was in the water purification system used for the QC test itself .
If Sarah had shipped the batch based on the first failed plate, she would have wasted $2 million of good medicine. But because she ran and environmental isolates , she saved it. quality control in microbiology slideshare
QC is 10% science and 90% detective work. Sarah performed a Gram stain. The colony was pink (Gram-negative rods). She ran an Oxidase test. It turned blue. She loaded the VITEK 2 machine. The QC data showed the truth: The batch was sterile