Friday, February 27, 2009

Quality Auditing Plans- Acceptable Quality Level or AQL

Quality Auditing Plans – Acceptable Quality Level or AQL

It’s common for sewing factories to use the Military Standard 105-E sampling plan to determine if the quality of the garments meets the specifications.
1. You need to determine your Acceptable Quality Level or AQL. This basically means what percent of the total products DO NOT MEET Acceptable Quality Levels. So an AQL of 2.5% means that up to 2.5% may be something less than first quality.
2. What is the total number of garments or Batch Size?
3. For our purposes, lets go with Normal Inspection Level II. (If there’s a failure, it’s common to apply a tightened inspection on the supplier until the quality is back in line.)

Go to this link and plug in the numbers
For example, 2000 pieces and AQL of 2.5%
i. Randomly pull and inspect 125 pieces
ii. If 7 or less pieces fail, ACCEPT the entire lot
iii. If 8 or more fail, REJECT the lot

Note: If you’re sampling for 2.5% AQL and you do not find any defects, you can’t claim that the entire batch has no defects. You’d need to tightened your AQL and inspect more garments.

More Later, Please let me know if you have questions!


The Underwear Maven

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