AQL refers to the worst allowable process average quality level when a consecutive series of batches are submitted for acceptance. ?
AQL is widely used in the quality inspection of products in various industries, and different AQL standards are used in the inspection of different substances. During AQL sampling, the sampled quantities are the same, and the smaller the number followed by AQL, the smaller the number of defects allowed, indicating that the higher the quality requirements, the more stringent the inspection.
The clothing quality inspection adopts a one-time sampling plan, the qualified quality level (AQL) of the clothing batch is 2.5, the inspection level is the general inspection level, and the strictness of the inspection is normal inspection. The batch range, inspection level, and AQL value determine the number of samples and the number of qualified and unqualified products.
Extended information:
AQL sampling process
1. Judgment
Sampling inspection is to use selected samples to inspect products or processes determination.
2. Sampling plan
Stipulates the number of unit products that should be inspected in each batch (sample size or series sample size) and the relevant batch acceptance criteria (including the number of acceptances, the number of rejections, and judgment rules, etc.).
3. Sampling method
1. Simple random sampling method (each individual has the same chance, similar to the familiar lottery).
2. Systematic random sampling method (equidistant or mechanical).
3. Stratified sampling method (simple random sampling according to the characteristics of the product, such as three sampling points for safe, serious and extremely serious).
4. Group sampling method (divided into groups).
Reference: Baidu Encyclopedia-AQL