AQL 0.65 on critical defects is the only number that matters before shipment
Last March a lot of 200,000 2 mL clear vials, 12 × 32 mm, 9 mm screw thread, failed outgoing inspection at the crimp-and-cap station because 14 of 315 sampled units had septa seated more than 0.4 mm proud of the cap skirt. The customer’s fill line caught it three days later as a needle-height fault on a tower. The AQL was 0.65. Fourteen defects in a 315-piece sample is roughly 4.4% defective, more than six times the acceptance number for that plan. Nobody had written the samplin...
