Inspection Standard
Statistical sampling criteria define the maximum permissible number of defective units or penalty points in a production lot before the entire consignment is refused. A lot rejection threshold establishes the numerical border line between acceptable commercial quality and mandatory lot rejection during pre-shipment inspections. Quality assurance frameworks rely on standardized sampling tables, such as ISO 2859-1 or ANSI/ASQ Z1.4, to govern soft goods audits.
Inspectors evaluate fabric rolls or sewn garments against defined defect limits for major and minor flaws.
Mathematical Calculation
Sampling plans assign numerical point values to visual and dimensional defects based on severity and physical size. Determining a lot rejection threshold involves calculating the cumulative defect count per hundred linear meters or total inspected units. For fabric roll inspections using the 4-point system, a lot exceeding forty penalty points per hundred square yards triggers immediate quarantine.
Garment batch audits set acceptance quality limits where finding three major defects in an eighty-piece sample results in lot failure.
Commercial Consequence
Crossing established defect limits triggers formal rejection notices that halt shipment release and lock payment transfers. A verified lot rejection threshold authorizes buyers to demand mill sorting or complete order cancellation at manufacturer expense.
Operational Boundary
Minor cosmetic irregularities below designated point values do not justify lot rejection under standard procurement agreements. A lot rejection threshold applies exclusively to batch sampling and does not preclude individual garment repairs during inline manufacturing.
